message stringlengths 2 43.5k | message_type stringclasses 2 values | message_id int64 0 1 | conversation_id int64 853 107k | cluster float64 24 24 | __index_level_0__ int64 1.71k 214k |
|---|---|---|---|---|---|
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
XXI Berland Annual Fair is coming really soon! Traditionally fair consists of n booths, arranged in a circle. The booths are numbered 1 through n clockwise with n being adjacent to 1. The i-th booths sells some candies for the price of a_i burles per item. Each booth has an unlimited supply of candies.
Polycarp has decided to spend at most T burles at the fair. However, he has some plan in mind for his path across the booths:
* at first, he visits booth number 1;
* if he has enough burles to buy exactly one candy from the current booth, then he buys it immediately;
* then he proceeds to the next booth in the clockwise order (regardless of if he bought a candy or not).
Polycarp's money is finite, thus the process will end once he can no longer buy candy at any booth.
Calculate the number of candies Polycarp will buy.
Input
The first line contains two integers n and T (1 β€ n β€ 2 β
10^5, 1 β€ T β€ 10^{18}) β the number of booths at the fair and the initial amount of burles Polycarp has.
The second line contains n integers a_1, a_2, ..., a_n (1 β€ a_i β€ 10^9) β the price of the single candy at booth number i.
Output
Print a single integer β the total number of candies Polycarp will buy.
Examples
Input
3 38
5 2 5
Output
10
Input
5 21
2 4 100 2 6
Output
6
Note
Let's consider the first example. Here are Polycarp's moves until he runs out of money:
1. Booth 1, buys candy for 5, T = 33;
2. Booth 2, buys candy for 2, T = 31;
3. Booth 3, buys candy for 5, T = 26;
4. Booth 1, buys candy for 5, T = 21;
5. Booth 2, buys candy for 2, T = 19;
6. Booth 3, buys candy for 5, T = 14;
7. Booth 1, buys candy for 5, T = 9;
8. Booth 2, buys candy for 2, T = 7;
9. Booth 3, buys candy for 5, T = 2;
10. Booth 1, buys no candy, not enough money;
11. Booth 2, buys candy for 2, T = 0.
No candy can be bought later. The total number of candies bought is 10.
In the second example he has 1 burle left at the end of his path, no candy can be bought with this amount.
Submitted Solution:
```
n, t = map(int, input().split())
a = [list(map(int, input().split()))]
k = 0
na = 0
ma = min(a[0])
while t >= ma:
la = len(a[na])
sa = sum(a[na])
if t >= sa:
k += la * (t // sa)
t %= sa
a.append([])
for ta in a[na]:
if t >= ta:
t -= ta
k += 1
a[na+1].append(ta)
na += 1
print(k)
``` | instruction | 0 | 9,111 | 24 | 18,222 |
Yes | output | 1 | 9,111 | 24 | 18,223 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
XXI Berland Annual Fair is coming really soon! Traditionally fair consists of n booths, arranged in a circle. The booths are numbered 1 through n clockwise with n being adjacent to 1. The i-th booths sells some candies for the price of a_i burles per item. Each booth has an unlimited supply of candies.
Polycarp has decided to spend at most T burles at the fair. However, he has some plan in mind for his path across the booths:
* at first, he visits booth number 1;
* if he has enough burles to buy exactly one candy from the current booth, then he buys it immediately;
* then he proceeds to the next booth in the clockwise order (regardless of if he bought a candy or not).
Polycarp's money is finite, thus the process will end once he can no longer buy candy at any booth.
Calculate the number of candies Polycarp will buy.
Input
The first line contains two integers n and T (1 β€ n β€ 2 β
10^5, 1 β€ T β€ 10^{18}) β the number of booths at the fair and the initial amount of burles Polycarp has.
The second line contains n integers a_1, a_2, ..., a_n (1 β€ a_i β€ 10^9) β the price of the single candy at booth number i.
Output
Print a single integer β the total number of candies Polycarp will buy.
Examples
Input
3 38
5 2 5
Output
10
Input
5 21
2 4 100 2 6
Output
6
Note
Let's consider the first example. Here are Polycarp's moves until he runs out of money:
1. Booth 1, buys candy for 5, T = 33;
2. Booth 2, buys candy for 2, T = 31;
3. Booth 3, buys candy for 5, T = 26;
4. Booth 1, buys candy for 5, T = 21;
5. Booth 2, buys candy for 2, T = 19;
6. Booth 3, buys candy for 5, T = 14;
7. Booth 1, buys candy for 5, T = 9;
8. Booth 2, buys candy for 2, T = 7;
9. Booth 3, buys candy for 5, T = 2;
10. Booth 1, buys no candy, not enough money;
11. Booth 2, buys candy for 2, T = 0.
No candy can be bought later. The total number of candies bought is 10.
In the second example he has 1 burle left at the end of his path, no candy can be bought with this amount.
Submitted Solution:
```
import os
import sys
from io import BytesIO, IOBase
import math
import itertools
import bisect
import heapq
sys.setrecursionlimit(300000)
def main():
pass
BUFSIZE = 8192
class FastIO(IOBase):
newlines = 0
def __init__(self, file):
self._fd = file.fileno()
self.buffer = BytesIO()
self.writable = "x" in file.mode or "r" not in file.mode
self.write = self.buffer.write if self.writable else None
def read(self):
while True:
b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
if not b:
break
ptr = self.buffer.tell()
self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
self.newlines = 0
return self.buffer.read()
def readline(self):
while self.newlines == 0:
b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
self.newlines = b.count(b"\n") + (not b)
ptr = self.buffer.tell()
self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
self.newlines -= 1
return self.buffer.readline()
def flush(self):
if self.writable:
os.write(self._fd, self.buffer.getvalue())
self.buffer.truncate(0), self.buffer.seek(0)
class IOWrapper(IOBase):
def __init__(self, file):
self.buffer = FastIO(file)
self.flush = self.buffer.flush
self.writable = self.buffer.writable
self.write = lambda s: self.buffer.write(s.encode("ascii"))
self.read = lambda: self.buffer.read().decode("ascii")
self.readline = lambda: self.buffer.readline().decode("ascii")
sys.stdin, sys.stdout = IOWrapper(sys.stdin), IOWrapper(sys.stdout)
input = lambda: sys.stdin.readline().rstrip("\r\n")
def binary(n):
return (bin(n).replace("0b", ""))
def decimal(s):
return (int(s, 2))
def pow2(n):
p = 0
while (n > 1):
n //= 2
p += 1
return (p)
def primeFactors(n):
l = []
while n % 2 == 0:
l.append(2)
n = n / 2
for i in range(3, int(math.sqrt(n)) + 1, 2):
while n % i == 0:
l.append(i)
n = n / i
if n > 2:
l.append(int(n))
return (l)
def isPrime(n):
if (n == 1):
return (False)
else:
root = int(n ** 0.5)
root += 1
for i in range(2, root):
if (n % i == 0):
return (False)
return (True)
def maxPrimeFactors(n):
maxPrime = -1
while n % 2 == 0:
maxPrime = 2
n >>= 1
for i in range(3, int(math.sqrt(n)) + 1, 2):
while n % i == 0:
maxPrime = i
n = n / i
if n > 2:
maxPrime = n
return int(maxPrime)
def countcon(s, i):
c = 0
ch = s[i]
for i in range(i, len(s)):
if (s[i] == ch):
c += 1
else:
break
return (c)
def lis(arr):
n = len(arr)
lis = [1] * n
for i in range(1, n):
for j in range(0, i):
if arr[i] > arr[j] and lis[i] < lis[j] + 1:
lis[i] = lis[j] + 1
maximum = 0
for i in range(n):
maximum = max(maximum, lis[i])
return maximum
def isSubSequence(str1, str2):
m = len(str1)
n = len(str2)
j = 0
i = 0
while j < m and i < n:
if str1[j] == str2[i]:
j = j + 1
i = i + 1
return j == m
def maxfac(n):
root = int(n ** 0.5)
for i in range(2, root + 1):
if (n % i == 0):
return (n // i)
return (n)
def p2(n):
c=0
while(n%2==0):
n//=2
c+=1
return c
def seive(n):
primes=[True]*(n+1)
primes[1]=primes[0]=False
for i in range(2,n+1):
if(primes[i]):
for j in range(i+i,n+1,i):
primes[j]=False
p=[]
for i in range(0,n+1):
if(primes[i]):
p.append(i)
return(p)
def ncr(n, r, p):
num = den = 1
for i in range(r):
num = (num * (n - i)) % p
den = (den * (i + 1)) % p
return (num * pow(den,
p - 2, p)) % p
def denofactinverse(n,m):
fac=1
for i in range(1,n+1):
fac=(fac*i)%m
return (pow(fac,m-2,m))
def numofact(n,m):
fac=1
for i in range(1,n+1):
fac=(fac*i)%m
return(fac)
n,t=map(int,input().split())
l=list(map(int,input().split()))
m=min(l)
ans=0
while(t>=m):
temp=t
x=0
bs=0
for i in range(0,n):
if(l[i]<=temp):
temp-=l[i]
x+=1
bs+=l[i]
ans+=x*(t//bs)
t%=bs
print(ans)
``` | instruction | 0 | 9,112 | 24 | 18,224 |
Yes | output | 1 | 9,112 | 24 | 18,225 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
XXI Berland Annual Fair is coming really soon! Traditionally fair consists of n booths, arranged in a circle. The booths are numbered 1 through n clockwise with n being adjacent to 1. The i-th booths sells some candies for the price of a_i burles per item. Each booth has an unlimited supply of candies.
Polycarp has decided to spend at most T burles at the fair. However, he has some plan in mind for his path across the booths:
* at first, he visits booth number 1;
* if he has enough burles to buy exactly one candy from the current booth, then he buys it immediately;
* then he proceeds to the next booth in the clockwise order (regardless of if he bought a candy or not).
Polycarp's money is finite, thus the process will end once he can no longer buy candy at any booth.
Calculate the number of candies Polycarp will buy.
Input
The first line contains two integers n and T (1 β€ n β€ 2 β
10^5, 1 β€ T β€ 10^{18}) β the number of booths at the fair and the initial amount of burles Polycarp has.
The second line contains n integers a_1, a_2, ..., a_n (1 β€ a_i β€ 10^9) β the price of the single candy at booth number i.
Output
Print a single integer β the total number of candies Polycarp will buy.
Examples
Input
3 38
5 2 5
Output
10
Input
5 21
2 4 100 2 6
Output
6
Note
Let's consider the first example. Here are Polycarp's moves until he runs out of money:
1. Booth 1, buys candy for 5, T = 33;
2. Booth 2, buys candy for 2, T = 31;
3. Booth 3, buys candy for 5, T = 26;
4. Booth 1, buys candy for 5, T = 21;
5. Booth 2, buys candy for 2, T = 19;
6. Booth 3, buys candy for 5, T = 14;
7. Booth 1, buys candy for 5, T = 9;
8. Booth 2, buys candy for 2, T = 7;
9. Booth 3, buys candy for 5, T = 2;
10. Booth 1, buys no candy, not enough money;
11. Booth 2, buys candy for 2, T = 0.
No candy can be bought later. The total number of candies bought is 10.
In the second example he has 1 burle left at the end of his path, no candy can be bought with this amount.
Submitted Solution:
```
def sum(a):
s = 0
for i in a:
s += i
return s
n, T = map(int, input().split())
a = list(map(int, input().split()))
sum = sum(a)
k = 0
k += n * (T // sum)
T %= sum
new_a = []
new_sum = 0
ch = True
while ch:
for i in range(n):
if a[i] <= T:
new_a.append(a[i])
new_sum += a[i]
k += 1
T -= a[i]
n = len(new_a)
if n == 0:
ch = False
break
sum = new_sum
a = new_a
new_a = []
new_sum = 0
k += n * (T // sum)
T %= sum
print(k)
``` | instruction | 0 | 9,113 | 24 | 18,226 |
Yes | output | 1 | 9,113 | 24 | 18,227 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
XXI Berland Annual Fair is coming really soon! Traditionally fair consists of n booths, arranged in a circle. The booths are numbered 1 through n clockwise with n being adjacent to 1. The i-th booths sells some candies for the price of a_i burles per item. Each booth has an unlimited supply of candies.
Polycarp has decided to spend at most T burles at the fair. However, he has some plan in mind for his path across the booths:
* at first, he visits booth number 1;
* if he has enough burles to buy exactly one candy from the current booth, then he buys it immediately;
* then he proceeds to the next booth in the clockwise order (regardless of if he bought a candy or not).
Polycarp's money is finite, thus the process will end once he can no longer buy candy at any booth.
Calculate the number of candies Polycarp will buy.
Input
The first line contains two integers n and T (1 β€ n β€ 2 β
10^5, 1 β€ T β€ 10^{18}) β the number of booths at the fair and the initial amount of burles Polycarp has.
The second line contains n integers a_1, a_2, ..., a_n (1 β€ a_i β€ 10^9) β the price of the single candy at booth number i.
Output
Print a single integer β the total number of candies Polycarp will buy.
Examples
Input
3 38
5 2 5
Output
10
Input
5 21
2 4 100 2 6
Output
6
Note
Let's consider the first example. Here are Polycarp's moves until he runs out of money:
1. Booth 1, buys candy for 5, T = 33;
2. Booth 2, buys candy for 2, T = 31;
3. Booth 3, buys candy for 5, T = 26;
4. Booth 1, buys candy for 5, T = 21;
5. Booth 2, buys candy for 2, T = 19;
6. Booth 3, buys candy for 5, T = 14;
7. Booth 1, buys candy for 5, T = 9;
8. Booth 2, buys candy for 2, T = 7;
9. Booth 3, buys candy for 5, T = 2;
10. Booth 1, buys no candy, not enough money;
11. Booth 2, buys candy for 2, T = 0.
No candy can be bought later. The total number of candies bought is 10.
In the second example he has 1 burle left at the end of his path, no candy can be bought with this amount.
Submitted Solution:
```
n = [int(i) for i in input().split()]
l = [int(i) for i in input().split()]
l = [int(i) for i in l if i<n[1]]
if n[1]%sum(l)==0:
print(int(n[1]/sum(l)))
else:
m = (n[1]//sum(l))*len(l)
n[1] -= sum(l)*len(l)
for i in l:
if n[1]-i>=0:
n[1] -= i
m += 1
else:
continue
print(m)
``` | instruction | 0 | 9,114 | 24 | 18,228 |
No | output | 1 | 9,114 | 24 | 18,229 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
XXI Berland Annual Fair is coming really soon! Traditionally fair consists of n booths, arranged in a circle. The booths are numbered 1 through n clockwise with n being adjacent to 1. The i-th booths sells some candies for the price of a_i burles per item. Each booth has an unlimited supply of candies.
Polycarp has decided to spend at most T burles at the fair. However, he has some plan in mind for his path across the booths:
* at first, he visits booth number 1;
* if he has enough burles to buy exactly one candy from the current booth, then he buys it immediately;
* then he proceeds to the next booth in the clockwise order (regardless of if he bought a candy or not).
Polycarp's money is finite, thus the process will end once he can no longer buy candy at any booth.
Calculate the number of candies Polycarp will buy.
Input
The first line contains two integers n and T (1 β€ n β€ 2 β
10^5, 1 β€ T β€ 10^{18}) β the number of booths at the fair and the initial amount of burles Polycarp has.
The second line contains n integers a_1, a_2, ..., a_n (1 β€ a_i β€ 10^9) β the price of the single candy at booth number i.
Output
Print a single integer β the total number of candies Polycarp will buy.
Examples
Input
3 38
5 2 5
Output
10
Input
5 21
2 4 100 2 6
Output
6
Note
Let's consider the first example. Here are Polycarp's moves until he runs out of money:
1. Booth 1, buys candy for 5, T = 33;
2. Booth 2, buys candy for 2, T = 31;
3. Booth 3, buys candy for 5, T = 26;
4. Booth 1, buys candy for 5, T = 21;
5. Booth 2, buys candy for 2, T = 19;
6. Booth 3, buys candy for 5, T = 14;
7. Booth 1, buys candy for 5, T = 9;
8. Booth 2, buys candy for 2, T = 7;
9. Booth 3, buys candy for 5, T = 2;
10. Booth 1, buys no candy, not enough money;
11. Booth 2, buys candy for 2, T = 0.
No candy can be bought later. The total number of candies bought is 10.
In the second example he has 1 burle left at the end of his path, no candy can be bought with this amount.
Submitted Solution:
```
def main():
n,T = map(int, input().strip().split())
b = [int(x) for x in input().strip().split()]
a = sorted(b, reverse=True)
s = sum(a)
ans = 0
k = 0
while T < s:
s -= a[k]
k += 1
for i in range(k,n):
if T >= s:
ans += (T // s) * (n-i)
T = T % s
else:
for j in range(n):
if T >= b[j]:
T -= b[j]
ans += 1
s -= a[i]
print(ans)
if __name__ == '__main__':
main()
``` | instruction | 0 | 9,115 | 24 | 18,230 |
No | output | 1 | 9,115 | 24 | 18,231 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
XXI Berland Annual Fair is coming really soon! Traditionally fair consists of n booths, arranged in a circle. The booths are numbered 1 through n clockwise with n being adjacent to 1. The i-th booths sells some candies for the price of a_i burles per item. Each booth has an unlimited supply of candies.
Polycarp has decided to spend at most T burles at the fair. However, he has some plan in mind for his path across the booths:
* at first, he visits booth number 1;
* if he has enough burles to buy exactly one candy from the current booth, then he buys it immediately;
* then he proceeds to the next booth in the clockwise order (regardless of if he bought a candy or not).
Polycarp's money is finite, thus the process will end once he can no longer buy candy at any booth.
Calculate the number of candies Polycarp will buy.
Input
The first line contains two integers n and T (1 β€ n β€ 2 β
10^5, 1 β€ T β€ 10^{18}) β the number of booths at the fair and the initial amount of burles Polycarp has.
The second line contains n integers a_1, a_2, ..., a_n (1 β€ a_i β€ 10^9) β the price of the single candy at booth number i.
Output
Print a single integer β the total number of candies Polycarp will buy.
Examples
Input
3 38
5 2 5
Output
10
Input
5 21
2 4 100 2 6
Output
6
Note
Let's consider the first example. Here are Polycarp's moves until he runs out of money:
1. Booth 1, buys candy for 5, T = 33;
2. Booth 2, buys candy for 2, T = 31;
3. Booth 3, buys candy for 5, T = 26;
4. Booth 1, buys candy for 5, T = 21;
5. Booth 2, buys candy for 2, T = 19;
6. Booth 3, buys candy for 5, T = 14;
7. Booth 1, buys candy for 5, T = 9;
8. Booth 2, buys candy for 2, T = 7;
9. Booth 3, buys candy for 5, T = 2;
10. Booth 1, buys no candy, not enough money;
11. Booth 2, buys candy for 2, T = 0.
No candy can be bought later. The total number of candies bought is 10.
In the second example he has 1 burle left at the end of his path, no candy can be bought with this amount.
Submitted Solution:
```
n,m=map(int,input().split())
a=list(map(int,input().split()))
b=[]
s,minc=0,a[0]
for i in range(n):
s+=a[i]
b.append(s)
minc=min(a[i],minc)
ans=n*(m//s)
m%=s
p=n//2-1
up=n-1
down=0
while down+1<up:
if b[p]>m:
up=p
elif b[p]<m:
down=p
else:
print(p+1+ans)
quit()
p=(up+down)//2
ans+=down+1
m-=a[down]
if m<minc:
print(ans)
quit()
for i in list(range(down+1,n))+list(range(0,down+1)):
if a[i]<m:
m-=a[i]
ans+=1
if m<minc:
break
print(ans)
``` | instruction | 0 | 9,116 | 24 | 18,232 |
No | output | 1 | 9,116 | 24 | 18,233 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
XXI Berland Annual Fair is coming really soon! Traditionally fair consists of n booths, arranged in a circle. The booths are numbered 1 through n clockwise with n being adjacent to 1. The i-th booths sells some candies for the price of a_i burles per item. Each booth has an unlimited supply of candies.
Polycarp has decided to spend at most T burles at the fair. However, he has some plan in mind for his path across the booths:
* at first, he visits booth number 1;
* if he has enough burles to buy exactly one candy from the current booth, then he buys it immediately;
* then he proceeds to the next booth in the clockwise order (regardless of if he bought a candy or not).
Polycarp's money is finite, thus the process will end once he can no longer buy candy at any booth.
Calculate the number of candies Polycarp will buy.
Input
The first line contains two integers n and T (1 β€ n β€ 2 β
10^5, 1 β€ T β€ 10^{18}) β the number of booths at the fair and the initial amount of burles Polycarp has.
The second line contains n integers a_1, a_2, ..., a_n (1 β€ a_i β€ 10^9) β the price of the single candy at booth number i.
Output
Print a single integer β the total number of candies Polycarp will buy.
Examples
Input
3 38
5 2 5
Output
10
Input
5 21
2 4 100 2 6
Output
6
Note
Let's consider the first example. Here are Polycarp's moves until he runs out of money:
1. Booth 1, buys candy for 5, T = 33;
2. Booth 2, buys candy for 2, T = 31;
3. Booth 3, buys candy for 5, T = 26;
4. Booth 1, buys candy for 5, T = 21;
5. Booth 2, buys candy for 2, T = 19;
6. Booth 3, buys candy for 5, T = 14;
7. Booth 1, buys candy for 5, T = 9;
8. Booth 2, buys candy for 2, T = 7;
9. Booth 3, buys candy for 5, T = 2;
10. Booth 1, buys no candy, not enough money;
11. Booth 2, buys candy for 2, T = 0.
No candy can be bought later. The total number of candies bought is 10.
In the second example he has 1 burle left at the end of his path, no candy can be bought with this amount.
Submitted Solution:
```
N=map(int,input().split())
BB=map(int,input().split())
N=list(N)
BB=list(BB)
def func(N,BB):
b=N[1]
j=0
minimum=min(BB)
flag=True
while(flag):
for i in BB:
if b>=i:
b-=i
j+=1
if b==0:
flag=False
return j
elif b<minimum:
flag=False
return j
else:
BB.remove(i)
if len(BB)==0:
return j
if str(print(func(N,BB)))=="1651":
print(1650)
``` | instruction | 0 | 9,117 | 24 | 18,234 |
No | output | 1 | 9,117 | 24 | 18,235 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995 | instruction | 0 | 10,021 | 24 | 20,042 |
Tags: math
Correct Solution:
```
t=int(input())
for _ in range(t):
n,m=map(int,input().split())
k=m*10
j=0
for i in range(1,11):
l=i*m
j+=l%10
x=n//k
p=x*j
x=x*10
x+=1
while(1):
l=x*m
if(l>n):
break
f=l%10
p+=f
x+=1
print(p)
``` | output | 1 | 10,021 | 24 | 20,043 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995 | instruction | 0 | 10,022 | 24 | 20,044 |
Tags: math
Correct Solution:
```
Q = int(input())
for q in range(Q):
numbers = list(map(int, input().split()))
n = numbers[0]
m = numbers[1]
sum = 0
for i in range(1, 10):
if (m * i > n):
break
sum += (m * i) % 10
if(m * 10 > n):
print(sum)
continue
qnt = (n // (m * 10))
ans = qnt * sum
if(n % (m * 10) != 0):
for j in range((m * 10) * (qnt), n + 1, m):
ans += j % 10
print(ans)
``` | output | 1 | 10,022 | 24 | 20,045 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995 | instruction | 0 | 10,023 | 24 | 20,046 |
Tags: math
Correct Solution:
```
t=int(input())
for i in range(t):
n,m=map(int,input().split())
s=0
t=(n//m)%10
for i in range(10):
s+=((m%10)*i)%10
if i==t:
ans=s
ans+=s*((n//m)//10)
print(ans)
``` | output | 1 | 10,023 | 24 | 20,047 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995 | instruction | 0 | 10,024 | 24 | 20,048 |
Tags: math
Correct Solution:
```
t = int(input())
for _ in range(t):
n, m = map(int, input().split())
ans = 0
if m == 1:
if n == 1:
ans = 1
else:
ans = 45 * (n // 10)
if n % 10 != 0:
for i in range(1, n % 10 + 1):
ans += i
elif (m > n) or (m == 10):
ans = 0
else:
if (m % 2 == 1):
k = 10
else:
k = 5
for i in range(k):
g = (i + 1) * m
g %= 10
ans += g * (n // (m * k))
#print(g, ans, 'qwerqwer')
for i in range(m, n % (m * k) + 1, m):
ans += i % 10
#print(ans, i + 1 * m, i)
print(ans)
``` | output | 1 | 10,024 | 24 | 20,049 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995 | instruction | 0 | 10,025 | 24 | 20,050 |
Tags: math
Correct Solution:
```
t=int(input())
for x in range(t):
# n=input()
a=list(map(int,input().split(" ")))
b=a[0]
c=a[1]
d=b//c
if d>10:
nl=0
m=c
arr=[]
while(nl<10):
arr.append(m%10)
m+=c
nl+=1
div=d//10
rem=d%10
ans=div*sum(arr)
ans+=sum(arr[:rem])
else:
m=c
arr=[]
while(d!=0):
arr.append(m%10)
m+=c
d-=1
ans=sum(arr)
print(ans)
``` | output | 1 | 10,025 | 24 | 20,051 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995 | instruction | 0 | 10,026 | 24 | 20,052 |
Tags: math
Correct Solution:
```
q = int(input())
answers = []
for ti in range(q):
ints = list(map(int, input().split()))
n, m = ints[0], ints[1]
digits = {}
mult = 1
while True:
s = str(mult * m)
mult += 1
digit = int(s[-1])
if digit in digits:
break
digits[digit] = 1
digits = list(digits.keys())
total = 0
mult = n // m // len(digits)
for i in range(len(digits)):
total += mult * digits[i]
rem = n // m % len(digits)
for i in range(rem):
total += digits[i]
rem = n % m
answers.append(total)
for a in answers:
print(a)
``` | output | 1 | 10,026 | 24 | 20,053 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995 | instruction | 0 | 10,027 | 24 | 20,054 |
Tags: math
Correct Solution:
```
def main():
tc = int(input())
while tc > 0:
tc -= 1
line = input().split()
n = int(line[0])
m = int(line[1])
d = []
for i in range(1, 11):
d.append(i * m)
ans = 0
g = 10 * m
cnt = n // g
for i in range(10):
ans += cnt * (d[i] % 10)
top = g * cnt
while top <= n:
ans += top % 10
top += m
print(ans)
main()
``` | output | 1 | 10,027 | 24 | 20,055 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995 | instruction | 0 | 10,028 | 24 | 20,056 |
Tags: math
Correct Solution:
```
for _ in[0]*int(input()):n,m=map(int,input().split());print(sum(i*m%10*((n//m-i)//10+1)for i in range(10)))
``` | output | 1 | 10,028 | 24 | 20,057 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995
Submitted Solution:
```
tensum = {0: 0, 1: 45, 2: 40, 3: 45, 4: 40, 5: 25, 6: 40, 7: 45, 8: 40, 9: 45}
t = int(input())
for tc in range(t):
n, m = map(int, input().split(' '))
sum1 = 0
ud = m % 10 # units digit of the divisor
rangeMax = n//m
sum1 += (rangeMax//10) * tensum[ud]
for i in range(1, rangeMax%10+1):
sum1 += (i*m)%10
print(sum1)
``` | instruction | 0 | 10,029 | 24 | 20,058 |
Yes | output | 1 | 10,029 | 24 | 20,059 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995
Submitted Solution:
```
arr = [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 45],
[2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 40],
[3, 6, 9, 2, 5, 8, 1, 4, 7, 0, 45],
[4, 8, 2, 6, 0, 4, 8, 2, 6, 0, 40],
[5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 25],
[6, 2, 8, 4, 0, 6, 2, 8, 4, 0, 40],
[7, 4, 1, 8, 5, 2, 9, 6, 3, 0, 45],
[8, 6, 4, 2, 0, 8, 6, 4, 2, 0, 40],
[9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 45] ]
def func(q, lastDigit):
sum = 0
for i in range(q%10):
sum += arr[lastDigit][i]
sum += (arr[lastDigit][10] * (q//10))
print(sum)
return
testCase = int(input())
for i in range(testCase):
n, m = input().split()
n = int(n)
m = int(m)
lastDigit = m % 10
func(n//m, lastDigit)
``` | instruction | 0 | 10,030 | 24 | 20,060 |
Yes | output | 1 | 10,030 | 24 | 20,061 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995
Submitted Solution:
```
import sys
import math
def get_array(): return list(map(int, sys.stdin.readline().strip().split()))
def read(): return int(input())
def reads(): return map(int, sys.stdin.readline().strip().split())
def input(): return sys.stdin.readline().strip() #strip() avoid reading '\n'
def solve(n, m):
loop = []
cyc = n // m
t = m % 10
while len(loop) == 0 or loop[0] != t:
loop.append(t)
t = (t + m % 10) % 10
s = 0
for x in loop:
s = s + x
res = cyc // len(loop) * s
cyc = cyc % len(loop)
while cyc:
res = res + loop[cyc - 1]
cyc = cyc - 1
return res
cas = read()
while cas:
n, m = reads()
print(solve(n, m))
cas = cas - 1
``` | instruction | 0 | 10,031 | 24 | 20,062 |
Yes | output | 1 | 10,031 | 24 | 20,063 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995
Submitted Solution:
```
q = int(input())
result = []
for i in range(q):
list_item = input().split()
[x, y] = map(int, list_item)
min_range = 0
y_mul_ten = y * 10
for ins in range(1, 10):
min_range += (y * ins) % 10
temp = x // y_mul_ten
rem = x % y_mul_ten
total = min_range * temp
index = 1
while (index * y) <= rem:
total += (index * y) % 10
index += 1
result.append(total)
for i in result:
print(i)
``` | instruction | 0 | 10,032 | 24 | 20,064 |
Yes | output | 1 | 10,032 | 24 | 20,065 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995
Submitted Solution:
```
s = [[0,0,0,0,0,0,0,0,0,0],[1, 2, 3, 4, 5, 6, 7, 8, 9,0],[2,4,6,8,0,2,4,6,8,0],[3,6,9,2,5,8,1,4,7,0],[4,8,2,6,0,4,8,2,6,0],[5,0,5,0,5,0,5,0,5,0],[6,2,8,4,0,6,2,8,4,0],[7,4,1,8,5,2,9,6,3,0],[8,6,4,2,0,8,6,4,2,0],[9,8,7,6,5,4,3,2,1,0]]
v =[0, 45, 40, 45, 40, 25, 40, 45, 40, 45]
for ind in range(int(input())):
a,e,t,u,t1 =0,0,0,0,0
a = list(map(int,input().split()))
e = a[1]%10
k = int(a[0]/a[1])
t = int(k/10)
u = k%10
for df in range(u):
t1+=s[e][df]
print(t1+t*v[e])
``` | instruction | 0 | 10,033 | 24 | 20,066 |
No | output | 1 | 10,033 | 24 | 20,067 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995
Submitted Solution:
```
q = int(input())
for _ in range(q):
n, m = map(int, input().split())
d = {}
for i in range(m, m*10+1, m):
d[i] = i%10
sm = 0
if n <= m*10:
for i in range(m, n+1, m):
sm += d[i]
ans = sm
else:
for i in range(m, m*10+1, m):
sm += d[i]
res = n//(m*10)
ans = res * sm
for i in range(m*10*res+m, n, m):
ans += i%10
print(ans)
``` | instruction | 0 | 10,034 | 24 | 20,068 |
No | output | 1 | 10,034 | 24 | 20,069 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995
Submitted Solution:
```
"""
for t in range(int(input())) :
n=int(input())
m=int(input())
p=pow(10000000000000000,1/4)
i,s=1,0
while i*i<=n:
if n%i==0:
s=s+(i%10)
p=n/i
if p!=i:
s=s+(i%10)
p=0
s=0
n,m=map(int,input().split())
ls=[]
for i in range(1,n+1):
if i%m==0:
#print(i)
s=s+i%10
ls.append(i%10)
#dp=p+15
print(ls)
print("ss ",s)
"""
for t in range(int(input())):
p=0
s=0
n,m=map(int,input().split())
ls=[]
for i in range (0,11):
ls.append([])
m1=m
m=m%10
if m==0:
m=10
lst=[]
for i in range(1,100+1):
if i%m==0:
lst.append(i%10)
s=s+i%10
if i%10==0:
ls[m].append(lst)
break
ln=len(lst)
p=(n/m1)
# print(ls[m][0])
#print("s :",s)
#print("ln :",ln)
""" print("p :",p)
print("p%ln:",p%ln)
print("p/ln:",p/ln)
print("p/ln:",int(p/ln))"""
p=int(p)
ans=int((p/ln))*s
#print("ans",ans)
#print(ans,n,m1,ln)
for i in range(0,p%ln):
ans=ans+ls[m][0][i]
if(ans==4999999999999958):
#n=str(n)+","+str(m1)
print(ans-4)
else:
print(ans)
"""
4999999999999958
1249999999999989
1
9999999999999903 8
"""
``` | instruction | 0 | 10,035 | 24 | 20,070 |
No | output | 1 | 10,035 | 24 | 20,071 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp is reading a book consisting of n pages numbered from 1 to n. Every time he finishes the page with the number divisible by m, he writes down the last digit of this page number. For example, if n=15 and m=5, pages divisible by m are 5, 10, 15. Their last digits are 5, 0, 5 correspondingly, their sum is 10.
Your task is to calculate the sum of all digits Polycarp has written down.
You have to answer q independent queries.
Input
The first line of the input contains one integer q (1 β€ q β€ 1000) β the number of queries.
The following q lines contain queries, one per line. Each query is given as two integers n and m (1 β€ n, m β€ 10^{16}) β the number of pages in the book and required divisor, respectively.
Output
For each query print the answer for it β the sum of digits written down by Polycarp.
Example
Input
7
1 1
10 1
100 3
1024 14
998244353 1337
123 144
1234312817382646 13
Output
1
45
153
294
3359835
0
427262129093995
Submitted Solution:
```
import math
q = int(input())
for i in range(q):
n, m = map(int, input().split())
if m % 10 == 0:
print(0)
else:
period = 1
sum = 0
while (period * m) % 10 != 0:
sum += (period * m) % 10
period += 1
period_len = period * m
n_period = math.floor(n / period_len)
remain = n % period_len
sum2 = 0
if period_len <= n:
for j in range(n - remain, n + 1, m):
sum2 += j % 10
print(n_period * sum + sum2)
``` | instruction | 0 | 10,036 | 24 | 20,072 |
No | output | 1 | 10,036 | 24 | 20,073 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES | instruction | 0 | 10,191 | 24 | 20,382 |
Tags: brute force, implementation
Correct Solution:
```
e = int(input())
task = []
for i in range(e):
day = int(input())
string = input()
task.append([day,string])
for x in task:
temp = []
flag = True
# temp = list(set(x[1]))
# ctr = x[1][0]
temp.append(x[1][0])
for i in x[1]:
if (i != temp[-1]):
temp.append(i)
if (len(temp) == len(list(set(temp)))):
print("yes")
else:
print("no")
``` | output | 1 | 10,191 | 24 | 20,383 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES | instruction | 0 | 10,192 | 24 | 20,384 |
Tags: brute force, implementation
Correct Solution:
```
t = int(input())
while t:
n = int(input())
st1 = input()
st2 = {}
st2 = set(st2)
f = 0
st2.add(st1[0])
for i in range(1, n):
if st1[i] != st1[i-1]:
if st1[i] not in st2:
st2.add(st1[i])
else:
f = 1
break
if f == 1:
print("NO")
else:
print("YES")
t -= 1
``` | output | 1 | 10,192 | 24 | 20,385 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES | instruction | 0 | 10,193 | 24 | 20,386 |
Tags: brute force, implementation
Correct Solution:
```
from collections import Counter
for _ in range(int(input())):
n=int(input())
s=input()
x=Counter(s)
string=''
for m in x:
string+=m*(x[m])
if string==s:
print("YES")
else:
print("NO")
``` | output | 1 | 10,193 | 24 | 20,387 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES | instruction | 0 | 10,194 | 24 | 20,388 |
Tags: brute force, implementation
Correct Solution:
```
t = int(input())
for _ in range(t):
n = int(input())
s = input()
letters = set()
letters.add(s[0])
for i in range(1, n):
if s[i] != s[i-1]:
if s[i] in letters:
print("NO")
break
else:
letters.add(s[i])
else:
print("YES")
``` | output | 1 | 10,194 | 24 | 20,389 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES | instruction | 0 | 10,195 | 24 | 20,390 |
Tags: brute force, implementation
Correct Solution:
```
n=int(input())
for i in range(n):
l=int(input())
str=input()
li=[]
c=0
for j in str:
if j not in li:
li.append(j)
else:
if li[len(li)-1]==j:
continue
else:
c=1
print("NO")
break
if c!=1:
print("YES")
``` | output | 1 | 10,195 | 24 | 20,391 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES | instruction | 0 | 10,196 | 24 | 20,392 |
Tags: brute force, implementation
Correct Solution:
```
# cook your dish here
try:
for t in range(int(input())):
n = int(input())
#l = list(map(int,input().split()))
s = input()
l = []
l.append(s[0])
c = 'YES'
for j in range(1,n):
if(s[j]==s[j-1]):
pass
elif(s[j] in l):
c = 'NO'
else:
l.append(s[j])
print(c)
except EOFError as e:
pass
``` | output | 1 | 10,196 | 24 | 20,393 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES | instruction | 0 | 10,197 | 24 | 20,394 |
Tags: brute force, implementation
Correct Solution:
```
for x in range(int(input())):
n=int(input())
s=input()
d={}
for i in range(n):
if s[i] not in d:
d[s[i]]=[i]
else:
d[s[i]].append(i)
flag=0
for i in d:
for j in range(len(d[i])-1):
if(d[i][j+1]-d[i][j]==1):
pass
else:
flag=1
break
if(flag==1):
print("No")
else:
print("Yes")
``` | output | 1 | 10,197 | 24 | 20,395 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES | instruction | 0 | 10,198 | 24 | 20,396 |
Tags: brute force, implementation
Correct Solution:
```
def solve(n,char_str):
checked = []
checking = char_str[0]
for i in char_str:
if i != checking:
if i in checked:
return 'NO'
checked.append(checking)
checking = i
return 'YES'
t = int(input())
for i in range(t):
n = int(input())
char_str = input()
print(solve(n,char_str))
``` | output | 1 | 10,198 | 24 | 20,397 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES
Submitted Solution:
```
# A: Do Not be Distracted!
#
t = int(input())
for elee in range(t):
n = int(input())
st = input()
lst = list(st)
for ind, ite in enumerate(st):
if st[ind-1]!=ite and ite in lst[:ind]:
print("NO")
break
else:
print("YES")
``` | instruction | 0 | 10,199 | 24 | 20,398 |
Yes | output | 1 | 10,199 | 24 | 20,399 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES
Submitted Solution:
```
for i in range(int(input())):
n = int(input())
s = input()
for i in range(len(s)):
if i <= len(s) - 2 and s[i] != s[i+1]:
if s[i] in s[i+1:]:
print("NO")
break
else:
print("YES")
``` | instruction | 0 | 10,200 | 24 | 20,400 |
Yes | output | 1 | 10,200 | 24 | 20,401 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES
Submitted Solution:
```
def main():
t = int(input())
for _ in range(1, t+1):
n = int(input())
s = input()
unique = set()
temp = ''
not_suspicious = True
for c in s:
if c == temp:
pass
else:
if ord(c) in unique:
not_suspicious = False
break
else:
temp = c
unique.add(ord(c))
if not_suspicious:
print('YES')
else:
print('NO')
if __name__ == '__main__': main()
``` | instruction | 0 | 10,201 | 24 | 20,402 |
Yes | output | 1 | 10,201 | 24 | 20,403 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES
Submitted Solution:
```
import sys
input = sys.stdin.readline
def mp():return map(int,input().split())
def lmp():return list(map(int,input().split()))
def mps(A):return [tuple(map(int, input().split())) for _ in range(A)]
import math
import bisect
from copy import deepcopy as dc
from itertools import accumulate
from collections import Counter, defaultdict, deque
def ceil(U,V):return (U+V-1)//V
def modf1(N,MOD):return (N-1)%MOD+1
inf = int(1e20)
mod = int(1e9+7)
def rle(lst):
ans = []
cnt = 1
ini = lst[0]
for i in range(1, len(lst)):
if ini == lst[i]:cnt += 1
else:
ans.append((ini, cnt))
cnt = 1
ini = lst[i]
ans.append((ini, cnt))
return ans
t = int(input())
for _ in range(t):
n = int(input())
s = list(input()[:-1])
s = rle(s)
#print(s)
used = [0]*26
f = True
for i,j in s:
if used[ord(i)-ord("A")] == 0:
used[ord(i)-ord("A")] += 1
else:
f = False
break
if f:
print("YES")
else:
print("NO")
``` | instruction | 0 | 10,202 | 24 | 20,404 |
Yes | output | 1 | 10,202 | 24 | 20,405 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES
Submitted Solution:
```
t = int(input())
p = False
z = []
pr = 10
for i in range(t):
n = int(input())
s = input()
for i in range(len(s)):
if s[i] not in z and n == pr or pr == 10:
z.append(s[i])
else:
p = True
pr = n
if not p:
print("YES")
else:
print("NO")
``` | instruction | 0 | 10,203 | 24 | 20,406 |
No | output | 1 | 10,203 | 24 | 20,407 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES
Submitted Solution:
```
import math
for _ in range(int(input())):
n = int(input())
s = input()
tmp=[]
ans=0
if n==1:
print("YES")
continue
for i in range(n-1):
if s[i]==s[i+1]:
continue
else:
tmp.append(s[i])
if s[i+1] in tmp:
ans =1
break
print(*tmp)
if ans==1:
print("NO")
else:
print("YES")
``` | instruction | 0 | 10,204 | 24 | 20,408 |
No | output | 1 | 10,204 | 24 | 20,409 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES
Submitted Solution:
```
# cook your dish here
t=int(input())
for i in range(t):
n=int(input())
s=input()
c=1
for i in range(len(s)):
if s[i] in s[i+1:len(s):1]:
c=0
break
else:
c=1
if c==1:
print('YES')
else:
print('NO')
``` | instruction | 0 | 10,205 | 24 | 20,410 |
No | output | 1 | 10,205 | 24 | 20,411 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has 26 tasks. Each task is designated by a capital letter of the Latin alphabet.
The teacher asked Polycarp to solve tasks in the following way: if Polycarp began to solve some task, then he must solve it to the end, without being distracted by another task. After switching to another task, Polycarp cannot return to the previous task.
Polycarp can only solve one task during the day. Every day he wrote down what task he solved. Now the teacher wants to know if Polycarp followed his advice.
For example, if Polycarp solved tasks in the following order: "DDBBCCCBBEZ", then the teacher will see that on the third day Polycarp began to solve the task 'B', then on the fifth day he got distracted and began to solve the task 'C', on the eighth day Polycarp returned to the task 'B'. Other examples of when the teacher is suspicious: "BAB", "AABBCCDDEEBZZ" and "AAAAZAAAAA".
If Polycarp solved the tasks as follows: "FFGZZZY", then the teacher cannot have any suspicions. Please note that Polycarp is not obligated to solve all tasks. Other examples of when the teacher doesn't have any suspicious: "BA", "AFFFCC" and "YYYYY".
Help Polycarp find out if his teacher might be suspicious.
Input
The first line contains an integer t (1 β€ t β€ 1000). Then t test cases follow.
The first line of each test case contains one integer n (1 β€ n β€ 50) β the number of days during which Polycarp solved tasks.
The second line contains a string of length n, consisting of uppercase Latin letters, which is the order in which Polycarp solved the tasks.
Output
For each test case output:
* "YES", if the teacher cannot be suspicious;
* "NO", otherwise.
You may print every letter in any case you want (so, for example, the strings yEs, yes, Yes and YES are all recognized as positive answer).
Example
Input
5
3
ABA
11
DDBBCCCBBEZ
7
FFGZZZY
1
Z
2
AB
Output
NO
NO
YES
YES
YES
Submitted Solution:
```
# -*- coding: utf-8 -*-
"""
Created on Wed May 5 20:43:22 2021
@author: babai
"""
tc=int(input())
for i in range(tc):
l=int(input())
st=input()
chk=list(st)
ch=[]
count=0
for j in range(len(chk)):
if(j==0):
ch.append(chk[j])
elif(ch[j-1]==chk[j]):
ch.append("re")
else:
ch.append(chk[j])
ch = [i for i in ch if i != "re"]
if(len(ch)!=len(set(ch))):
print("NO")
else:
print("YES")
``` | instruction | 0 | 10,206 | 24 | 20,412 |
No | output | 1 | 10,206 | 24 | 20,413 |
Provide tags and a correct Python 2 solution for this coding contest problem.
Polycarpus has a sequence, consisting of n non-negative integers: a1, a2, ..., an.
Let's define function f(l, r) (l, r are integer, 1 β€ l β€ r β€ n) for sequence a as an operation of bitwise OR of all the sequence elements with indexes from l to r. Formally: f(l, r) = al | al + 1 | ... | ar.
Polycarpus took a piece of paper and wrote out the values of function f(l, r) for all l, r (l, r are integer, 1 β€ l β€ r β€ n). Now he wants to know, how many distinct values he's got in the end.
Help Polycarpus, count the number of distinct values of function f(l, r) for the given sequence a.
Expression x | y means applying the operation of bitwise OR to numbers x and y. This operation exists in all modern programming languages, for example, in language C++ and Java it is marked as "|", in Pascal β as "or".
Input
The first line contains integer n (1 β€ n β€ 105) β the number of elements of sequence a. The second line contains n space-separated integers a1, a2, ..., an (0 β€ ai β€ 106) β the elements of sequence a.
Output
Print a single integer β the number of distinct values of function f(l, r) for the given sequence a.
Please, do not use the %lld specifier to read or write 64-bit integers in Π‘++. It is preferred to use cin, cout streams or the %I64d specifier.
Examples
Input
3
1 2 0
Output
4
Input
10
1 2 3 4 5 6 1 2 9 10
Output
11
Note
In the first test case Polycarpus will have 6 numbers written on the paper: f(1, 1) = 1, f(1, 2) = 3, f(1, 3) = 3, f(2, 2) = 2, f(2, 3) = 2, f(3, 3) = 0. There are exactly 4 distinct numbers among them: 0, 1, 2, 3. | instruction | 0 | 10,259 | 24 | 20,518 |
Tags: bitmasks
Correct Solution:
```
from sys import stdin, stdout
from collections import Counter, defaultdict
from itertools import permutations, combinations
raw_input = stdin.readline
pr = stdout.write
def in_num():
return int(raw_input())
def in_arr():
return tuple(map(int,raw_input().split()))
def pr_num(n):
stdout.write(str(n)+'\n')
def pr_arr(arr):
pr(' '.join(map(str,arr))+'\n')
# fast read function for total integer input
def inp():
# this function returns whole input of
# space/line seperated integers
# Use Ctrl+D to flush stdin.
return map(int,stdin.read().split())
range = xrange # not for python 3.0+
n=input()
l=in_arr()
ans=set()
temp=set()
for i in l:
temp=set([i|j for j in temp])
temp.add(i)
ans.update(temp)
pr_num(len(ans))
``` | output | 1 | 10,259 | 24 | 20,519 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarpus has a sequence, consisting of n non-negative integers: a1, a2, ..., an.
Let's define function f(l, r) (l, r are integer, 1 β€ l β€ r β€ n) for sequence a as an operation of bitwise OR of all the sequence elements with indexes from l to r. Formally: f(l, r) = al | al + 1 | ... | ar.
Polycarpus took a piece of paper and wrote out the values of function f(l, r) for all l, r (l, r are integer, 1 β€ l β€ r β€ n). Now he wants to know, how many distinct values he's got in the end.
Help Polycarpus, count the number of distinct values of function f(l, r) for the given sequence a.
Expression x | y means applying the operation of bitwise OR to numbers x and y. This operation exists in all modern programming languages, for example, in language C++ and Java it is marked as "|", in Pascal β as "or".
Input
The first line contains integer n (1 β€ n β€ 105) β the number of elements of sequence a. The second line contains n space-separated integers a1, a2, ..., an (0 β€ ai β€ 106) β the elements of sequence a.
Output
Print a single integer β the number of distinct values of function f(l, r) for the given sequence a.
Please, do not use the %lld specifier to read or write 64-bit integers in Π‘++. It is preferred to use cin, cout streams or the %I64d specifier.
Examples
Input
3
1 2 0
Output
4
Input
10
1 2 3 4 5 6 1 2 9 10
Output
11
Note
In the first test case Polycarpus will have 6 numbers written on the paper: f(1, 1) = 1, f(1, 2) = 3, f(1, 3) = 3, f(2, 2) = 2, f(2, 3) = 2, f(3, 3) = 0. There are exactly 4 distinct numbers among them: 0, 1, 2, 3. | instruction | 0 | 10,260 | 24 | 20,520 |
Tags: bitmasks
Correct Solution:
```
n, a, b = input(), set(), set()
for i in map(int, input().split()):
b = set(i | j for j in b)
b.add(i)
a.update(b)
print(len(a))
``` | output | 1 | 10,260 | 24 | 20,521 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarpus has a sequence, consisting of n non-negative integers: a1, a2, ..., an.
Let's define function f(l, r) (l, r are integer, 1 β€ l β€ r β€ n) for sequence a as an operation of bitwise OR of all the sequence elements with indexes from l to r. Formally: f(l, r) = al | al + 1 | ... | ar.
Polycarpus took a piece of paper and wrote out the values of function f(l, r) for all l, r (l, r are integer, 1 β€ l β€ r β€ n). Now he wants to know, how many distinct values he's got in the end.
Help Polycarpus, count the number of distinct values of function f(l, r) for the given sequence a.
Expression x | y means applying the operation of bitwise OR to numbers x and y. This operation exists in all modern programming languages, for example, in language C++ and Java it is marked as "|", in Pascal β as "or".
Input
The first line contains integer n (1 β€ n β€ 105) β the number of elements of sequence a. The second line contains n space-separated integers a1, a2, ..., an (0 β€ ai β€ 106) β the elements of sequence a.
Output
Print a single integer β the number of distinct values of function f(l, r) for the given sequence a.
Please, do not use the %lld specifier to read or write 64-bit integers in Π‘++. It is preferred to use cin, cout streams or the %I64d specifier.
Examples
Input
3
1 2 0
Output
4
Input
10
1 2 3 4 5 6 1 2 9 10
Output
11
Note
In the first test case Polycarpus will have 6 numbers written on the paper: f(1, 1) = 1, f(1, 2) = 3, f(1, 3) = 3, f(2, 2) = 2, f(2, 3) = 2, f(3, 3) = 0. There are exactly 4 distinct numbers among them: 0, 1, 2, 3. | instruction | 0 | 10,261 | 24 | 20,522 |
Tags: bitmasks
Correct Solution:
```
import sys, math,os
from io import BytesIO, IOBase
#from bisect import bisect_left as bl, bisect_right as br, insort
#from heapq import heapify, heappush, heappop
from collections import defaultdict as dd, deque, Counter
#from itertools import permutations,combinations
def data(): return sys.stdin.readline().strip()
def mdata(): return list(map(int, data().split()))
def outl(var) : sys.stdout.write(' '.join(map(str, var))+'\n')
def out(var) : sys.stdout.write(str(var)+'\n')
sys.setrecursionlimit(100000)
INF = float('inf')
mod = int(1e9)+7
def main():
n=int(data())
A=mdata()
s=set()
ans=set()
for i in A:
s=set(i|j for j in s)
s.add(i)
ans.update(s)
print(len(ans))
if __name__ == '__main__':
main()
``` | output | 1 | 10,261 | 24 | 20,523 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarpus has a sequence, consisting of n non-negative integers: a1, a2, ..., an.
Let's define function f(l, r) (l, r are integer, 1 β€ l β€ r β€ n) for sequence a as an operation of bitwise OR of all the sequence elements with indexes from l to r. Formally: f(l, r) = al | al + 1 | ... | ar.
Polycarpus took a piece of paper and wrote out the values of function f(l, r) for all l, r (l, r are integer, 1 β€ l β€ r β€ n). Now he wants to know, how many distinct values he's got in the end.
Help Polycarpus, count the number of distinct values of function f(l, r) for the given sequence a.
Expression x | y means applying the operation of bitwise OR to numbers x and y. This operation exists in all modern programming languages, for example, in language C++ and Java it is marked as "|", in Pascal β as "or".
Input
The first line contains integer n (1 β€ n β€ 105) β the number of elements of sequence a. The second line contains n space-separated integers a1, a2, ..., an (0 β€ ai β€ 106) β the elements of sequence a.
Output
Print a single integer β the number of distinct values of function f(l, r) for the given sequence a.
Please, do not use the %lld specifier to read or write 64-bit integers in Π‘++. It is preferred to use cin, cout streams or the %I64d specifier.
Examples
Input
3
1 2 0
Output
4
Input
10
1 2 3 4 5 6 1 2 9 10
Output
11
Note
In the first test case Polycarpus will have 6 numbers written on the paper: f(1, 1) = 1, f(1, 2) = 3, f(1, 3) = 3, f(2, 2) = 2, f(2, 3) = 2, f(3, 3) = 0. There are exactly 4 distinct numbers among them: 0, 1, 2, 3. | instruction | 0 | 10,262 | 24 | 20,524 |
Tags: bitmasks
Correct Solution:
```
n, p, q = input(), set(), set()
for i in map(int, input().split()):
q = set(i | j for j in q)
q.add(i)
p.update(q)
print(len(p))
``` | output | 1 | 10,262 | 24 | 20,525 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarpus has a sequence, consisting of n non-negative integers: a1, a2, ..., an.
Let's define function f(l, r) (l, r are integer, 1 β€ l β€ r β€ n) for sequence a as an operation of bitwise OR of all the sequence elements with indexes from l to r. Formally: f(l, r) = al | al + 1 | ... | ar.
Polycarpus took a piece of paper and wrote out the values of function f(l, r) for all l, r (l, r are integer, 1 β€ l β€ r β€ n). Now he wants to know, how many distinct values he's got in the end.
Help Polycarpus, count the number of distinct values of function f(l, r) for the given sequence a.
Expression x | y means applying the operation of bitwise OR to numbers x and y. This operation exists in all modern programming languages, for example, in language C++ and Java it is marked as "|", in Pascal β as "or".
Input
The first line contains integer n (1 β€ n β€ 105) β the number of elements of sequence a. The second line contains n space-separated integers a1, a2, ..., an (0 β€ ai β€ 106) β the elements of sequence a.
Output
Print a single integer β the number of distinct values of function f(l, r) for the given sequence a.
Please, do not use the %lld specifier to read or write 64-bit integers in Π‘++. It is preferred to use cin, cout streams or the %I64d specifier.
Examples
Input
3
1 2 0
Output
4
Input
10
1 2 3 4 5 6 1 2 9 10
Output
11
Note
In the first test case Polycarpus will have 6 numbers written on the paper: f(1, 1) = 1, f(1, 2) = 3, f(1, 3) = 3, f(2, 2) = 2, f(2, 3) = 2, f(3, 3) = 0. There are exactly 4 distinct numbers among them: 0, 1, 2, 3. | instruction | 0 | 10,263 | 24 | 20,526 |
Tags: bitmasks
Correct Solution:
```
#n=int(input())
from bisect import bisect_right
#d=sorted(d,key=lambda x:(len(d[x]),-x)) d=dictionary d={x:set() for x in arr}
#n=int(input())
#n,m,k= map(int, input().split())
import heapq
#for _ in range(int(input())):
#n,k=map(int, input().split())
#input=sys.stdin.buffer.readline
#for _ in range(int(input())):
n=int(input())
arr = list(map(int, input().split()))
ans=set()
s=set()
for i in range(n):
s={arr[i]|j for j in s}
s.add(arr[i])
ans.update(s)
#print(s)
print(len(ans))
``` | output | 1 | 10,263 | 24 | 20,527 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarpus has a sequence, consisting of n non-negative integers: a1, a2, ..., an.
Let's define function f(l, r) (l, r are integer, 1 β€ l β€ r β€ n) for sequence a as an operation of bitwise OR of all the sequence elements with indexes from l to r. Formally: f(l, r) = al | al + 1 | ... | ar.
Polycarpus took a piece of paper and wrote out the values of function f(l, r) for all l, r (l, r are integer, 1 β€ l β€ r β€ n). Now he wants to know, how many distinct values he's got in the end.
Help Polycarpus, count the number of distinct values of function f(l, r) for the given sequence a.
Expression x | y means applying the operation of bitwise OR to numbers x and y. This operation exists in all modern programming languages, for example, in language C++ and Java it is marked as "|", in Pascal β as "or".
Input
The first line contains integer n (1 β€ n β€ 105) β the number of elements of sequence a. The second line contains n space-separated integers a1, a2, ..., an (0 β€ ai β€ 106) β the elements of sequence a.
Output
Print a single integer β the number of distinct values of function f(l, r) for the given sequence a.
Please, do not use the %lld specifier to read or write 64-bit integers in Π‘++. It is preferred to use cin, cout streams or the %I64d specifier.
Examples
Input
3
1 2 0
Output
4
Input
10
1 2 3 4 5 6 1 2 9 10
Output
11
Note
In the first test case Polycarpus will have 6 numbers written on the paper: f(1, 1) = 1, f(1, 2) = 3, f(1, 3) = 3, f(2, 2) = 2, f(2, 3) = 2, f(3, 3) = 0. There are exactly 4 distinct numbers among them: 0, 1, 2, 3. | instruction | 0 | 10,264 | 24 | 20,528 |
Tags: bitmasks
Correct Solution:
```
def R(): return map(int, input().split())
def I(): return int(input())
def S(): return str(input())
def L(): return list(R())
from collections import Counter
import math
import sys
from itertools import permutations
import bisect
n=I()
a=L()
s1=set()
s2=set()
for i in range(n):
s1={a[i]|j for j in s1}
s1.add(a[i])
s2.update(s1)
print(len(s2))
``` | output | 1 | 10,264 | 24 | 20,529 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarpus has a sequence, consisting of n non-negative integers: a1, a2, ..., an.
Let's define function f(l, r) (l, r are integer, 1 β€ l β€ r β€ n) for sequence a as an operation of bitwise OR of all the sequence elements with indexes from l to r. Formally: f(l, r) = al | al + 1 | ... | ar.
Polycarpus took a piece of paper and wrote out the values of function f(l, r) for all l, r (l, r are integer, 1 β€ l β€ r β€ n). Now he wants to know, how many distinct values he's got in the end.
Help Polycarpus, count the number of distinct values of function f(l, r) for the given sequence a.
Expression x | y means applying the operation of bitwise OR to numbers x and y. This operation exists in all modern programming languages, for example, in language C++ and Java it is marked as "|", in Pascal β as "or".
Input
The first line contains integer n (1 β€ n β€ 105) β the number of elements of sequence a. The second line contains n space-separated integers a1, a2, ..., an (0 β€ ai β€ 106) β the elements of sequence a.
Output
Print a single integer β the number of distinct values of function f(l, r) for the given sequence a.
Please, do not use the %lld specifier to read or write 64-bit integers in Π‘++. It is preferred to use cin, cout streams or the %I64d specifier.
Examples
Input
3
1 2 0
Output
4
Input
10
1 2 3 4 5 6 1 2 9 10
Output
11
Note
In the first test case Polycarpus will have 6 numbers written on the paper: f(1, 1) = 1, f(1, 2) = 3, f(1, 3) = 3, f(2, 2) = 2, f(2, 3) = 2, f(3, 3) = 0. There are exactly 4 distinct numbers among them: 0, 1, 2, 3. | instruction | 0 | 10,265 | 24 | 20,530 |
Tags: bitmasks
Correct Solution:
```
import copy
n=int(input())
a=list(map(int,input().split()))
ans=set()
s=set()
s.add(a[0])
ans.add(a[0])
for i in range(1,len(a)):
pres=set()
for x in s:
pres.add(x|a[i])
pres.add(a[i])
for y in pres:
ans.add(y)
s=copy.deepcopy(pres)
print(len(ans))
``` | output | 1 | 10,265 | 24 | 20,531 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarpus has a sequence, consisting of n non-negative integers: a1, a2, ..., an.
Let's define function f(l, r) (l, r are integer, 1 β€ l β€ r β€ n) for sequence a as an operation of bitwise OR of all the sequence elements with indexes from l to r. Formally: f(l, r) = al | al + 1 | ... | ar.
Polycarpus took a piece of paper and wrote out the values of function f(l, r) for all l, r (l, r are integer, 1 β€ l β€ r β€ n). Now he wants to know, how many distinct values he's got in the end.
Help Polycarpus, count the number of distinct values of function f(l, r) for the given sequence a.
Expression x | y means applying the operation of bitwise OR to numbers x and y. This operation exists in all modern programming languages, for example, in language C++ and Java it is marked as "|", in Pascal β as "or".
Input
The first line contains integer n (1 β€ n β€ 105) β the number of elements of sequence a. The second line contains n space-separated integers a1, a2, ..., an (0 β€ ai β€ 106) β the elements of sequence a.
Output
Print a single integer β the number of distinct values of function f(l, r) for the given sequence a.
Please, do not use the %lld specifier to read or write 64-bit integers in Π‘++. It is preferred to use cin, cout streams or the %I64d specifier.
Examples
Input
3
1 2 0
Output
4
Input
10
1 2 3 4 5 6 1 2 9 10
Output
11
Note
In the first test case Polycarpus will have 6 numbers written on the paper: f(1, 1) = 1, f(1, 2) = 3, f(1, 3) = 3, f(2, 2) = 2, f(2, 3) = 2, f(3, 3) = 0. There are exactly 4 distinct numbers among them: 0, 1, 2, 3. | instruction | 0 | 10,266 | 24 | 20,532 |
Tags: bitmasks
Correct Solution:
```
n=int(input())
a=list(map(int,input().split()))
b=set();c=set()
for i in a:
b=set(i|j for j in b)
b.add(i)
c.update(b)
print(len(c))
``` | output | 1 | 10,266 | 24 | 20,533 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarpus has a sequence, consisting of n non-negative integers: a1, a2, ..., an.
Let's define function f(l, r) (l, r are integer, 1 β€ l β€ r β€ n) for sequence a as an operation of bitwise OR of all the sequence elements with indexes from l to r. Formally: f(l, r) = al | al + 1 | ... | ar.
Polycarpus took a piece of paper and wrote out the values of function f(l, r) for all l, r (l, r are integer, 1 β€ l β€ r β€ n). Now he wants to know, how many distinct values he's got in the end.
Help Polycarpus, count the number of distinct values of function f(l, r) for the given sequence a.
Expression x | y means applying the operation of bitwise OR to numbers x and y. This operation exists in all modern programming languages, for example, in language C++ and Java it is marked as "|", in Pascal β as "or".
Input
The first line contains integer n (1 β€ n β€ 105) β the number of elements of sequence a. The second line contains n space-separated integers a1, a2, ..., an (0 β€ ai β€ 106) β the elements of sequence a.
Output
Print a single integer β the number of distinct values of function f(l, r) for the given sequence a.
Please, do not use the %lld specifier to read or write 64-bit integers in Π‘++. It is preferred to use cin, cout streams or the %I64d specifier.
Examples
Input
3
1 2 0
Output
4
Input
10
1 2 3 4 5 6 1 2 9 10
Output
11
Note
In the first test case Polycarpus will have 6 numbers written on the paper: f(1, 1) = 1, f(1, 2) = 3, f(1, 3) = 3, f(2, 2) = 2, f(2, 3) = 2, f(3, 3) = 0. There are exactly 4 distinct numbers among them: 0, 1, 2, 3. | instruction | 0 | 10,267 | 24 | 20,534 |
Tags: bitmasks
Correct Solution:
```
import sys,os
from io import BytesIO,IOBase
# from functools import lru_cache
mod = 10**9+7; Mod = 998244353; INF = float('inf')
# input = lambda: sys.stdin.readline().rstrip("\r\n")
# inp = lambda: list(map(int,sys.stdin.readline().rstrip("\r\n").split()))
#______________________________________________________________________________________________________
# region fastio
# '''
BUFSIZE = 8192
class FastIO(IOBase):
newlines = 0
def __init__(self, file):
self._fd = file.fileno()
self.buffer = BytesIO()
self.writable = "x" in file.mode or "r" not in file.mode
self.write = self.buffer.write if self.writable else None
def read(self):
while True:
b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
if not b:
break
ptr = self.buffer.tell()
self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
self.newlines = 0
return self.buffer.read()
def readline(self):
while self.newlines == 0:
b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
self.newlines = b.count(b"\n") + (not b)
ptr = self.buffer.tell()
self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
self.newlines -= 1
return self.buffer.readline()
def flush(self):
if self.writable:
os.write(self._fd, self.buffer.getvalue())
self.buffer.truncate(0), self.buffer.seek(0)
class IOWrapper(IOBase):
def __init__(self, file):
self.buffer = FastIO(file)
self.flush = self.buffer.flush
self.writable = self.buffer.writable
self.write = lambda s: self.buffer.write(s.encode("ascii"))
self.read = lambda: self.buffer.read().decode("ascii")
self.readline = lambda: self.buffer.readline().decode("ascii")
sys.stdin, sys.stdout = IOWrapper(sys.stdin), IOWrapper(sys.stdout)
# endregion'''
#______________________________________________________________________________________________________
input = lambda: sys.stdin.readline().rstrip("\r\n")
inp = lambda: list(map(int,sys.stdin.readline().rstrip("\r\n").split()))
# ______________________________________________________________________________________________________
# import math
# from bisect import *
# from heapq import *
from collections import defaultdict as dd
# from collections import OrderedDict as odict
# from collections import Counter as cc
# from collections import deque
# from itertools import groupby
# from itertools import combinations
# sys.setrecursionlimit(100_100) #this is must for dfs
# ______________________________________________________________________________________________________
# segment tree for range minimum query and update 0 indexing
# init = float('inf')
# st = [init for i in range(4*len(a))]
# def build(a,ind,start,end):
# if start == end:
# st[ind] = a[start]
# else:
# mid = (start+end)//2
# build(a,2*ind+1,start,mid)
# build(a,2*ind+2,mid+1,end)
# st[ind] = min(st[2*ind+1],st[2*ind+2])
# build(a,0,0,n-1)
# def query(ind,l,r,start,end):
# if start>r or end<l:
# return init
# if l<=start<=end<=r:
# return st[ind]
# mid = (start+end)//2
# return min(query(2*ind+1,l,r,start,mid),query(2*ind+2,l,r,mid+1,end))
# def update(ind,val,stind,start,end):
# if start<=ind<=end:
# if start==end:
# st[stind] = a[start] = val
# else:
# mid = (start+end)//2
# update(ind,val,2*stind+1,start,mid)
# update(ind,val,2*stind+2,mid+1,end)
# st[stind] = min(st[left],st[right])
# ______________________________________________________________________________________________________
# Checking prime in O(root(N))
# def isprime(n):
# if (n % 2 == 0 and n > 2) or n == 1: return 0
# else:
# s = int(n**(0.5)) + 1
# for i in range(3, s, 2):
# if n % i == 0:
# return 0
# return 1
# def lcm(a,b):
# return (a*b)//gcd(a,b)
# returning factors in O(root(N))
# def factors(n):
# fact = []
# N = int(n**0.5)+1
# for i in range(1,N):
# if (n%i==0):
# fact.append(i)
# if (i!=n//i):
# fact.append(n//i)
# return fact
# ______________________________________________________________________________________________________
# Merge sort for inversion count
# def mergeSort(left,right,arr,temp):
# inv_cnt = 0
# if left<right:
# mid = (left+right)//2
# inv1 = mergeSort(left,mid,arr,temp)
# inv2 = mergeSort(mid+1,right,arr,temp)
# inv3 = merge(left,right,mid,arr,temp)
# inv_cnt = inv1+inv3+inv2
# return inv_cnt
# def merge(left,right,mid,arr,temp):
# i = left
# j = mid+1
# k = left
# inv = 0
# while(i<=mid and j<=right):
# if(arr[i]<=arr[j]):
# temp[k] = arr[i]
# i+=1
# else:
# temp[k] = arr[j]
# inv+=(mid+1-i)
# j+=1
# k+=1
# while(i<=mid):
# temp[k]=arr[i]
# i+=1
# k+=1
# while(j<=right):
# temp[k]=arr[j]
# j+=1
# k+=1
# for k in range(left,right+1):
# arr[k] = temp[k]
# return inv
# ______________________________________________________________________________________________________
# nCr under mod
# def C(n,r,mod = 10**9+7):
# if r>n: return 0
# if r>n-r: r = n-r
# num = den = 1
# for i in range(r):
# num = (num*(n-i))%mod
# den = (den*(i+1))%mod
# return (num*pow(den,mod-2,mod))%mod
# def C(n,r):
# if r>n:
# return 0
# if r>n-r:
# r = n-r
# ans = 1
# for i in range(r):
# ans = (ans*(n-i))//(i+1)
# return ans
# ______________________________________________________________________________________________________
# For smallest prime factor of a number
# M = 5*10**5+100
# spf = [i for i in range(M)]
# def spfs(M):
# for i in range(2,M):
# if spf[i]==i:
# for j in range(i*i,M,i):
# if spf[j]==j:
# spf[j] = i
# return
# spfs(M)
# p = [0]*M
# for i in range(2,M):
# p[i]+=(p[i-1]+(spf[i]==i))
# ______________________________________________________________________________________________________
# def gtc(p):
# print('Case #'+str(p)+': ',end='')
# ______________________________________________________________________________________________________
tc = 1
# tc = int(input())
for test in range(1,tc+1):
n = int(input())
a = inp()
s = [[n]*20 for i in range(n+1)]
for i in range(n-1,-1,-1):
for j in range(20):
s[i][j] = s[i+1][j]
if (a[i]&(1<<j)):
s[i][j] = i
ans = set()
for i in range(n):
num = a[i]
ans.add(num)
d = dd(list)
for j in range(20):
if s[i][j]<n and s[i][j]!=i:
d[s[i][j]].append(j)
for key in sorted(d.keys()):
for j in d[key]:
num+=(1<<j)
ans.add(num)
print(len(ans))
``` | output | 1 | 10,267 | 24 | 20,535 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarpus has a sequence, consisting of n non-negative integers: a1, a2, ..., an.
Let's define function f(l, r) (l, r are integer, 1 β€ l β€ r β€ n) for sequence a as an operation of bitwise OR of all the sequence elements with indexes from l to r. Formally: f(l, r) = al | al + 1 | ... | ar.
Polycarpus took a piece of paper and wrote out the values of function f(l, r) for all l, r (l, r are integer, 1 β€ l β€ r β€ n). Now he wants to know, how many distinct values he's got in the end.
Help Polycarpus, count the number of distinct values of function f(l, r) for the given sequence a.
Expression x | y means applying the operation of bitwise OR to numbers x and y. This operation exists in all modern programming languages, for example, in language C++ and Java it is marked as "|", in Pascal β as "or".
Input
The first line contains integer n (1 β€ n β€ 105) β the number of elements of sequence a. The second line contains n space-separated integers a1, a2, ..., an (0 β€ ai β€ 106) β the elements of sequence a.
Output
Print a single integer β the number of distinct values of function f(l, r) for the given sequence a.
Please, do not use the %lld specifier to read or write 64-bit integers in Π‘++. It is preferred to use cin, cout streams or the %I64d specifier.
Examples
Input
3
1 2 0
Output
4
Input
10
1 2 3 4 5 6 1 2 9 10
Output
11
Note
In the first test case Polycarpus will have 6 numbers written on the paper: f(1, 1) = 1, f(1, 2) = 3, f(1, 3) = 3, f(2, 2) = 2, f(2, 3) = 2, f(3, 3) = 0. There are exactly 4 distinct numbers among them: 0, 1, 2, 3.
Submitted Solution:
```
input();a,b=set(),set()
for i in map(int,input().split()):a={i|j for j in a}; a.add(i,);b.update(a)
print(len(b))
``` | instruction | 0 | 10,268 | 24 | 20,536 |
Yes | output | 1 | 10,268 | 24 | 20,537 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarpus has a sequence, consisting of n non-negative integers: a1, a2, ..., an.
Let's define function f(l, r) (l, r are integer, 1 β€ l β€ r β€ n) for sequence a as an operation of bitwise OR of all the sequence elements with indexes from l to r. Formally: f(l, r) = al | al + 1 | ... | ar.
Polycarpus took a piece of paper and wrote out the values of function f(l, r) for all l, r (l, r are integer, 1 β€ l β€ r β€ n). Now he wants to know, how many distinct values he's got in the end.
Help Polycarpus, count the number of distinct values of function f(l, r) for the given sequence a.
Expression x | y means applying the operation of bitwise OR to numbers x and y. This operation exists in all modern programming languages, for example, in language C++ and Java it is marked as "|", in Pascal β as "or".
Input
The first line contains integer n (1 β€ n β€ 105) β the number of elements of sequence a. The second line contains n space-separated integers a1, a2, ..., an (0 β€ ai β€ 106) β the elements of sequence a.
Output
Print a single integer β the number of distinct values of function f(l, r) for the given sequence a.
Please, do not use the %lld specifier to read or write 64-bit integers in Π‘++. It is preferred to use cin, cout streams or the %I64d specifier.
Examples
Input
3
1 2 0
Output
4
Input
10
1 2 3 4 5 6 1 2 9 10
Output
11
Note
In the first test case Polycarpus will have 6 numbers written on the paper: f(1, 1) = 1, f(1, 2) = 3, f(1, 3) = 3, f(2, 2) = 2, f(2, 3) = 2, f(3, 3) = 0. There are exactly 4 distinct numbers among them: 0, 1, 2, 3.
Submitted Solution:
```
n = int(input())
a = list(map(int, input().split()))
s1, s2 = set(), set()
for each in a:
st = set()
st.add(each)
for i in s1:
st.add(each | i)
s1 = st
s2.update(s1)
print(len(s2))
``` | instruction | 0 | 10,269 | 24 | 20,538 |
Yes | output | 1 | 10,269 | 24 | 20,539 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.