message stringlengths 2 59.7k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 37 108k | cluster float64 20 20 | __index_level_0__ int64 74 217k |
|---|---|---|---|---|---|
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vanya got an important task — he should enumerate books in the library and label each book with its number. Each of the n books should be assigned with a number from 1 to n. Naturally, distinct books should be assigned distinct numbers.
Vanya wants to know how many digits he will have to write down as he labels the books.
Input
The first line contains integer n (1 ≤ n ≤ 109) — the number of books in the library.
Output
Print the number of digits needed to number all the books.
Examples
Input
13
Output
17
Input
4
Output
4
Note
Note to the first test. The books get numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, which totals to 17 digits.
Note to the second sample. The books get numbers 1, 2, 3, 4, which totals to 4 digits.
Submitted Solution:
```
"""
arr = list(map(int, input().split()))
n,k=map(int, input().split())
"""
number = str(input())
digits = len(number)
number = int(number)
counter = 1
res = 0
check = 0
while counter <= digits:
high = '9' * counter
if number > int(high):
res += counter * int(high)
check = int(high)
else:
res += (number - check) * digits
counter += 1
print(res)
``` | instruction | 0 | 71,181 | 20 | 142,362 |
No | output | 1 | 71,181 | 20 | 142,363 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vanya got an important task — he should enumerate books in the library and label each book with its number. Each of the n books should be assigned with a number from 1 to n. Naturally, distinct books should be assigned distinct numbers.
Vanya wants to know how many digits he will have to write down as he labels the books.
Input
The first line contains integer n (1 ≤ n ≤ 109) — the number of books in the library.
Output
Print the number of digits needed to number all the books.
Examples
Input
13
Output
17
Input
4
Output
4
Note
Note to the first test. The books get numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, which totals to 17 digits.
Note to the second sample. The books get numbers 1, 2, 3, 4, which totals to 4 digits.
Submitted Solution:
```
n=int(input())
c=0
l=len(str(n))
if l==1:
print(1)
else:
k=1
while k<l:
c+=(pow(10,k)-pow(10,k-1))*k
k=k+1
c+=(n-pow(10,l-1)+1)*l
print(c)
``` | instruction | 0 | 71,182 | 20 | 142,364 |
No | output | 1 | 71,182 | 20 | 142,365 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vanya got an important task — he should enumerate books in the library and label each book with its number. Each of the n books should be assigned with a number from 1 to n. Naturally, distinct books should be assigned distinct numbers.
Vanya wants to know how many digits he will have to write down as he labels the books.
Input
The first line contains integer n (1 ≤ n ≤ 109) — the number of books in the library.
Output
Print the number of digits needed to number all the books.
Examples
Input
13
Output
17
Input
4
Output
4
Note
Note to the first test. The books get numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, which totals to 17 digits.
Note to the second sample. The books get numbers 1, 2, 3, 4, which totals to 4 digits.
Submitted Solution:
```
q=input()
p=0
a=int(q)
for i in range(1,a+1):
d=len(str(i))
p=p+d
``` | instruction | 0 | 71,183 | 20 | 142,366 |
No | output | 1 | 71,183 | 20 | 142,367 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vanya got an important task — he should enumerate books in the library and label each book with its number. Each of the n books should be assigned with a number from 1 to n. Naturally, distinct books should be assigned distinct numbers.
Vanya wants to know how many digits he will have to write down as he labels the books.
Input
The first line contains integer n (1 ≤ n ≤ 109) — the number of books in the library.
Output
Print the number of digits needed to number all the books.
Examples
Input
13
Output
17
Input
4
Output
4
Note
Note to the first test. The books get numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, which totals to 17 digits.
Note to the second sample. The books get numbers 1, 2, 3, 4, which totals to 4 digits.
Submitted Solution:
```
n = int(input())
a = 10
c = 0
b = 1
while a<n:
c = c + b*(a-a//10)
a = a*10
b = b + 1
if a>=n:
c = c + (n+1-(a//10))*b
print (c)
``` | instruction | 0 | 71,184 | 20 | 142,368 |
No | output | 1 | 71,184 | 20 | 142,369 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya decided to pass a very large integer n to Kate. First, he wrote that number as a string, then he appended to the right integer k — the number of digits in n.
Magically, all the numbers were shuffled in arbitrary order while this note was passed to Kate. The only thing that Vasya remembers, is a non-empty substring of n (a substring of n is a sequence of consecutive digits of the number n).
Vasya knows that there may be more than one way to restore the number n. Your task is to find the smallest possible initial integer n. Note that decimal representation of number n contained no leading zeroes, except the case the integer n was equal to zero itself (in this case a single digit 0 was used).
Input
The first line of the input contains the string received by Kate. The number of digits in this string does not exceed 1 000 000.
The second line contains the substring of n which Vasya remembers. This string can contain leading zeroes.
It is guaranteed that the input data is correct, and the answer always exists.
Output
Print the smalles integer n which Vasya could pass to Kate.
Examples
Input
003512
021
Output
30021
Input
199966633300
63
Output
3036366999 | instruction | 0 | 71,233 | 20 | 142,466 |
Tags: brute force, constructive algorithms, strings
Correct Solution:
```
a = input()
b = input()
d = [0] * 10
n = 0
for j in range(1000100):
t = str(j)
if len(t) + j == len(a):
n = j
for x in str(n):
d[ord(x) - ord('0')] -= 1
for x in a:
d[ord(x) - ord('0')] += 1
for x in b:
d[ord(x) - ord('0')] -= 1
if sum(d)==0:
print(b)
else:
A = []
B = []
C = []
D = []
if b[0] != '0':
A = list(b)
for j in range(10):
for k in range(d[j]):
A.append(chr(ord('0') + j))
t = 1
while t < len(d) and d[t] == 0:
t += 1
oo = ord('0')
if t < len(d):
B.append(chr(oo+t))
d[t] -= 1
for j in range(ord(b[0]) - oo):
for k in range(d[j]):
B.append(chr(ord('0') + j))
B.extend(list(b))
for j in range(ord(b[0]) - oo, 10):
for k in range(d[j]):
B.append(chr(ord('0') + j))
C.append(chr(oo+t))
for j in range(min(ord(b[0]) - oo+1, 10)):
for k in range(d[j]):
C.append(chr(ord('0') + j))
C.extend(list(b))
for j in range(ord(b[0]) - oo+1, 10):
for k in range(d[j]):
C.append(chr(ord('0') + j))
ans = []
if len(A) > 0:
ans.append(''.join(A))
if len(B) > 0:
ans.append(''.join(B))
if len(C) > 0:
ans.append(''.join(C))
print(min(ans))
``` | output | 1 | 71,233 | 20 | 142,467 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya decided to pass a very large integer n to Kate. First, he wrote that number as a string, then he appended to the right integer k — the number of digits in n.
Magically, all the numbers were shuffled in arbitrary order while this note was passed to Kate. The only thing that Vasya remembers, is a non-empty substring of n (a substring of n is a sequence of consecutive digits of the number n).
Vasya knows that there may be more than one way to restore the number n. Your task is to find the smallest possible initial integer n. Note that decimal representation of number n contained no leading zeroes, except the case the integer n was equal to zero itself (in this case a single digit 0 was used).
Input
The first line of the input contains the string received by Kate. The number of digits in this string does not exceed 1 000 000.
The second line contains the substring of n which Vasya remembers. This string can contain leading zeroes.
It is guaranteed that the input data is correct, and the answer always exists.
Output
Print the smalles integer n which Vasya could pass to Kate.
Examples
Input
003512
021
Output
30021
Input
199966633300
63
Output
3036366999 | instruction | 0 | 71,234 | 20 | 142,468 |
Tags: brute force, constructive algorithms, strings
Correct Solution:
```
import math
from collections import Counter
s = list(map(int, input()))
substr = input().rstrip()
t = list(map(int, substr))
m = len(s)
x, y = 0, m
z = (x + y) // 2
while z != x:
if z + math.floor(math.log10(z)) + 1 <= m:
x = z
else:
y = z
z = (x + y)//2
m1 = z
k = math.floor(math.log10(m1)) + 1
D = Counter(s)
D.subtract(map(int, str(m1)))
D.subtract(t)
try:
c1 = min(i for i in range(1, 10) if D[i] > 0)
c2 = t[0]
D[c1] -= 1
_prefix = [c1]
for c in range(c2):
_prefix += [c] * D[c]
_suffix = []
for c in range(c2 + 1, 10):
_suffix += [c] * D[c]
num = ''.join([str(c2)] * D[c2])
prefix = ''.join(map(str, _prefix))
suffix = ''.join(map(str, _suffix))
if c2 == 0:
print(min(prefix + substr + num + suffix,
prefix + num + substr + suffix))
else:
D[c1] += 1
st = []
for c in range(10):
st += [c] * D[c]
print(min(prefix + substr + num + suffix,
prefix + num + substr + suffix,
substr + ''.join(map(str, st))))
except ValueError:
print(substr + '0'*D[0])
``` | output | 1 | 71,234 | 20 | 142,469 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya decided to pass a very large integer n to Kate. First, he wrote that number as a string, then he appended to the right integer k — the number of digits in n.
Magically, all the numbers were shuffled in arbitrary order while this note was passed to Kate. The only thing that Vasya remembers, is a non-empty substring of n (a substring of n is a sequence of consecutive digits of the number n).
Vasya knows that there may be more than one way to restore the number n. Your task is to find the smallest possible initial integer n. Note that decimal representation of number n contained no leading zeroes, except the case the integer n was equal to zero itself (in this case a single digit 0 was used).
Input
The first line of the input contains the string received by Kate. The number of digits in this string does not exceed 1 000 000.
The second line contains the substring of n which Vasya remembers. This string can contain leading zeroes.
It is guaranteed that the input data is correct, and the answer always exists.
Output
Print the smalles integer n which Vasya could pass to Kate.
Examples
Input
003512
021
Output
30021
Input
199966633300
63
Output
3036366999 | instruction | 0 | 71,235 | 20 | 142,470 |
Tags: brute force, constructive algorithms, strings
Correct Solution:
```
import sys
def main():
a = sys.stdin.readline().strip()
b = sys.stdin.readline().strip()
if a == "01" or a == "10":
print("0")
return
cnt = [0] * 256
for i in map(ord, a):
cnt[i] += 1
n = sum(cnt)
l = 0
for i in range(1, 8):
if i == len(str(n - i)):
l = n - i
break;
for s in b, str(l):
for i in map(ord, s):
cnt[i] -= 1
res = ["".join([b] + [chr(k) * v for k, v in enumerate(cnt) if v > 0 ])] if b[0] > "0" else []
for i in range(ord("1"), ord("9") + 1):
if cnt[i] > 0:
cnt[i] -= 1
others = [chr(k) * v for k, v in enumerate(cnt) if v > 0]
others.append(b)
res.append("".join([chr(i)] + sorted(others)))
break
print(min(res))
if __name__ == "__main__":
main()
``` | output | 1 | 71,235 | 20 | 142,471 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya decided to pass a very large integer n to Kate. First, he wrote that number as a string, then he appended to the right integer k — the number of digits in n.
Magically, all the numbers were shuffled in arbitrary order while this note was passed to Kate. The only thing that Vasya remembers, is a non-empty substring of n (a substring of n is a sequence of consecutive digits of the number n).
Vasya knows that there may be more than one way to restore the number n. Your task is to find the smallest possible initial integer n. Note that decimal representation of number n contained no leading zeroes, except the case the integer n was equal to zero itself (in this case a single digit 0 was used).
Input
The first line of the input contains the string received by Kate. The number of digits in this string does not exceed 1 000 000.
The second line contains the substring of n which Vasya remembers. This string can contain leading zeroes.
It is guaranteed that the input data is correct, and the answer always exists.
Output
Print the smalles integer n which Vasya could pass to Kate.
Examples
Input
003512
021
Output
30021
Input
199966633300
63
Output
3036366999 | instruction | 0 | 71,236 | 20 | 142,472 |
Tags: brute force, constructive algorithms, strings
Correct Solution:
```
def main():
s = input()
if s in ("01", "10"):
print(0)
return
cnt = [0] * 58
for j in map(ord, s):
cnt[j] += 1
n, s1 = sum(cnt), input()
for le in range(n - 1, 0, -1):
if len(str(le)) + le == n:
break
for s in s1, str(le):
for j in map(ord, s):
cnt[j] -= 1
res = [''.join([s1] + [chr(i) * a for i, a in enumerate(cnt) if a])] if s1[0] > '0' else []
for i in range(49, 58):
if cnt[i]:
cnt[i] -= 1
l = [chr(i) * a for i, a in enumerate(cnt) if a]
l.append(s1)
res.append(''.join([chr(i)] + sorted(l)))
break
print(min(res))
if __name__ == '__main__':
main()
``` | output | 1 | 71,236 | 20 | 142,473 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya decided to pass a very large integer n to Kate. First, he wrote that number as a string, then he appended to the right integer k — the number of digits in n.
Magically, all the numbers were shuffled in arbitrary order while this note was passed to Kate. The only thing that Vasya remembers, is a non-empty substring of n (a substring of n is a sequence of consecutive digits of the number n).
Vasya knows that there may be more than one way to restore the number n. Your task is to find the smallest possible initial integer n. Note that decimal representation of number n contained no leading zeroes, except the case the integer n was equal to zero itself (in this case a single digit 0 was used).
Input
The first line of the input contains the string received by Kate. The number of digits in this string does not exceed 1 000 000.
The second line contains the substring of n which Vasya remembers. This string can contain leading zeroes.
It is guaranteed that the input data is correct, and the answer always exists.
Output
Print the smalles integer n which Vasya could pass to Kate.
Examples
Input
003512
021
Output
30021
Input
199966633300
63
Output
3036366999 | instruction | 0 | 71,237 | 20 | 142,474 |
Tags: brute force, constructive algorithms, strings
Correct Solution:
```
import sys
sys.stderr = sys.stdout
from collections import Counter
K = (0, 11, 102, 1003, 10004, 100005, 1000006)
def sf(S, C, C0):
if C0 == '0':
return True
if S[0] == '0':
return False
def g1():
yield from S
for _ in range(C['0']):
yield '0'
for _ in range(C[C0]):
yield C0
def g2():
yield C0
for _ in range(C['0']):
yield '0'
for _ in range(C[C0] - 1):
yield C0
yield from S
for d1, d2 in zip(g1(), g2()):
if d1 < d2:
return True
elif d1 > d2:
return False
return True
def number(D, S):
m = len(D)
for i in range(len(K)):
if K[i] > m:
k = m - i
break
sK = str(k)
if len(S) == k:
return S
C = Counter(D)
C.subtract(sK)
C.subtract(S)
L = []
C0 = next(d for d in '1234567890' if C[d])
if sf(S, C, C0):
L.append(S)
for d in '0123456789':
L.append(d * C[d])
else:
L.append(C0)
C[C0] -= 1
S0 = S[0]
for d in '0123456789':
if d == S0:
S1 = next((d for d in S if d != S0), S0)
if S1 <= S0:
L.append(S)
L.append(d * C[d])
else:
L.append(d * C[d])
L.append(S)
else:
L.append(d * C[d])
return ''.join(L)
def main():
D = input()
S = input()
print(number(D, S))
##########
def readint():
return int(input())
def readinti():
return map(int, input().split())
def readintt():
return tuple(readinti())
def readintl():
return list(readinti())
def readinttl(k):
return [readintt() for _ in range(k)]
def readintll(k):
return [readintl() for _ in range(k)]
def log(*args, **kwargs):
print(*args, **kwargs, file=sys.__stderr__)
if __name__ == '__main__':
main()
``` | output | 1 | 71,237 | 20 | 142,475 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya decided to pass a very large integer n to Kate. First, he wrote that number as a string, then he appended to the right integer k — the number of digits in n.
Magically, all the numbers were shuffled in arbitrary order while this note was passed to Kate. The only thing that Vasya remembers, is a non-empty substring of n (a substring of n is a sequence of consecutive digits of the number n).
Vasya knows that there may be more than one way to restore the number n. Your task is to find the smallest possible initial integer n. Note that decimal representation of number n contained no leading zeroes, except the case the integer n was equal to zero itself (in this case a single digit 0 was used).
Input
The first line of the input contains the string received by Kate. The number of digits in this string does not exceed 1 000 000.
The second line contains the substring of n which Vasya remembers. This string can contain leading zeroes.
It is guaranteed that the input data is correct, and the answer always exists.
Output
Print the smalles integer n which Vasya could pass to Kate.
Examples
Input
003512
021
Output
30021
Input
199966633300
63
Output
3036366999
Submitted Solution:
```
n = input()
n_2 = [0]*10
n2 = len(n)
for i in [1]:
if n2 > 10:
n2 -= 1
else:
break
if n2 > 100:
n2 -= 1
else:
break
if n2 > 1000:
n2 -= 1
else:
break
if n2 > 10000:
n2 -= 1
else:
break
if n2 > 100000:
n2 -= 1
n2 = str(n2-1)
n2_2 = [0]*10
n3 = input()
n3_2 = [0]*10
n4 = len(n2)
num = ""
for i in n:
n_2[int(i)] += 1
for i in n2:
n2_2[int(i)] += 1
last_dig = int(n3[0])
temp = 0
temp2 = 0
for i in n3:
i = int(i)
n3_2[i] += 1
if temp2 != 1 and i > last_dig:
temp = 1
temp2 = 1
if temp2 != 1 and i < last_dig:
temp2 = 1
for i in range(10):
n_2[i] -= n2_2[i] + n3_2[i]
for i in range(1,10):
if n_2[i] != 0:
num += str(i)
n_2[i] -= 1
break
if num == "":
num += n3
for i in range(10):
num += str(i) * n_2[i]
else:
if temp == 1:
for i in range(10):
num += str(i) * n_2[i]
if n3[0] == str(i):
num += n3
else:
for i in range(10):
if n3[0] == str(i):
if num[0] == str(i):
num += n3[1:]
else:
num += n3
num += str(i) * n_2[i]
print(num)
``` | instruction | 0 | 71,238 | 20 | 142,476 |
No | output | 1 | 71,238 | 20 | 142,477 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya decided to pass a very large integer n to Kate. First, he wrote that number as a string, then he appended to the right integer k — the number of digits in n.
Magically, all the numbers were shuffled in arbitrary order while this note was passed to Kate. The only thing that Vasya remembers, is a non-empty substring of n (a substring of n is a sequence of consecutive digits of the number n).
Vasya knows that there may be more than one way to restore the number n. Your task is to find the smallest possible initial integer n. Note that decimal representation of number n contained no leading zeroes, except the case the integer n was equal to zero itself (in this case a single digit 0 was used).
Input
The first line of the input contains the string received by Kate. The number of digits in this string does not exceed 1 000 000.
The second line contains the substring of n which Vasya remembers. This string can contain leading zeroes.
It is guaranteed that the input data is correct, and the answer always exists.
Output
Print the smalles integer n which Vasya could pass to Kate.
Examples
Input
003512
021
Output
30021
Input
199966633300
63
Output
3036366999
Submitted Solution:
```
def log(x):
res = 0
c = 1
while c <= x:
c *= 10
res += 1
return res
def inttochr(x):
res = []
if x == 0:
return [0]
while x > 0:
res.append(x % 10)
x //= 10
return res
a = sorted(list(map(lambda x: int(x), list(input()))))
b = input()
bl = list(map(lambda x: int(x), list(b)))
sb = bl[0]
i = 0
while i < len(bl) - 1 and bl[i] == sb:
i += 1
if bl[i] > sb:
ae = True
else:
ae = False
k = 1
while len(a) - log(k) > k:
k += 1
for i in inttochr(k):
a.remove(i)
for i in bl:
a.remove(i)
j = 0
while j < len(a) - 1 and a[j] == 0:
j += 1
if j < len(a) and (sb == 0 or (sb > a[j] and a[j] != 0)):
print(a[j], end='')
a.remove(a[j])
bbb = True
else:
bbb = False
print(b, end='')
j = 0
while j < len(a) and (a[j] < sb or (ae and a[j] == sb)):
print(a[j], end='')
j += 1
if bbb:
print(b, end='')
while j < len(a):
print(a[j], end='')
j += 1
``` | instruction | 0 | 71,239 | 20 | 142,478 |
No | output | 1 | 71,239 | 20 | 142,479 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya decided to pass a very large integer n to Kate. First, he wrote that number as a string, then he appended to the right integer k — the number of digits in n.
Magically, all the numbers were shuffled in arbitrary order while this note was passed to Kate. The only thing that Vasya remembers, is a non-empty substring of n (a substring of n is a sequence of consecutive digits of the number n).
Vasya knows that there may be more than one way to restore the number n. Your task is to find the smallest possible initial integer n. Note that decimal representation of number n contained no leading zeroes, except the case the integer n was equal to zero itself (in this case a single digit 0 was used).
Input
The first line of the input contains the string received by Kate. The number of digits in this string does not exceed 1 000 000.
The second line contains the substring of n which Vasya remembers. This string can contain leading zeroes.
It is guaranteed that the input data is correct, and the answer always exists.
Output
Print the smalles integer n which Vasya could pass to Kate.
Examples
Input
003512
021
Output
30021
Input
199966633300
63
Output
3036366999
Submitted Solution:
```
def nonz(l):
for i in range(0,len(l)):
if l[i] > '0':
if len(l[i]) > 0 and l[i][0] == '0':
continue
l[0],l[i] = l[i],l[0]
return l
s = list(input())
c = input()
s = list(set(s) - set(c))
s.sort()
s = nonz(s)
ss = set(s)
m = ""
for i in range(0,min(len(s)+len(c),1000001)):
si = str(i)
for j in range(0,len(c)):
if c[:j] == si and len(s)+len(c)-j-len(si) == i:
pos = s + c[len(c)-j:]
if m == "" or (pos) < (m):
m = str(pos)
print(len(ss & set(si)))
if len(ss & set(si)) == len(si):
pos = (ss - set(si))
pos.add(c)
pos = list(pos)
pos.sort()
pos = nonz(pos)
pos = "".join(pos)
pos = str(pos)
if m == "" or (pos) < (m):
m = pos
print(m)
``` | instruction | 0 | 71,240 | 20 | 142,480 |
No | output | 1 | 71,240 | 20 | 142,481 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya decided to pass a very large integer n to Kate. First, he wrote that number as a string, then he appended to the right integer k — the number of digits in n.
Magically, all the numbers were shuffled in arbitrary order while this note was passed to Kate. The only thing that Vasya remembers, is a non-empty substring of n (a substring of n is a sequence of consecutive digits of the number n).
Vasya knows that there may be more than one way to restore the number n. Your task is to find the smallest possible initial integer n. Note that decimal representation of number n contained no leading zeroes, except the case the integer n was equal to zero itself (in this case a single digit 0 was used).
Input
The first line of the input contains the string received by Kate. The number of digits in this string does not exceed 1 000 000.
The second line contains the substring of n which Vasya remembers. This string can contain leading zeroes.
It is guaranteed that the input data is correct, and the answer always exists.
Output
Print the smalles integer n which Vasya could pass to Kate.
Examples
Input
003512
021
Output
30021
Input
199966633300
63
Output
3036366999
Submitted Solution:
```
# import math
# import sys
def get_length(s,n):
for i in range(1,8):
if pow(10,i-1)<=n-i and n-i<pow(10,i):
return n-i
s = input().strip()
sub = input().strip()
n = len(s)
l = get_length(s,n)
if s=="01" or s=="10" or s=="0":
print(0)
elif len(sub)==l:
print(sub)
else:
l=str(l)
d = {}
for a in s:
if a in d:
d[a] += 1
else:
d[a] = 1
for i in sub:
d[i]-=1
if d[i] == 0:
d.pop(i)
for i in l:
d[i]-=1
if d[i] == 0:
d.pop(i)
k = sorted(d.keys())
ans=""
dec=True
for i in range(1,len(sub)):
if sub[i]<sub[0]:
break
elif sub[i]>sub[0]:
dec=False
break
m = len(k)
add=False
if "0" in d and d["0"]>0:
idx = 0
while idx<m and k[idx].startswith("0") and d[k[idx]]>0:
idx+=1
if idx==m:
ans+=sub
add=True
else:
d[k[idx]]-=1
ans=k[idx]
idx=0
for i in k:
if (not add) and sub[0]==i:
if dec:
ans+=sub
ans+=(i*d[i])
else:
ans+=(i*d[i])
ans+=sub
add=True
else:
ans+=(i*d[i])
if not add:
ans+=sub
print(ans)
``` | instruction | 0 | 71,241 | 20 | 142,482 |
No | output | 1 | 71,241 | 20 | 142,483 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs. | instruction | 0 | 71,277 | 20 | 142,554 |
Tags: *special
Correct Solution:
```
p = str(eval(input().replace('/', '//')))
lastnum = 0
for x in p:
num = ord(x)
if num > lastnum:
print('+' * (num - lastnum) + '.' )
else:
print('-' * (lastnum - num) + '.' )
lastnum = num
``` | output | 1 | 71,277 | 20 | 142,555 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs. | instruction | 0 | 71,278 | 20 | 142,556 |
Tags: *special
Correct Solution:
```
a = eval(input())
s = str(a)
for i in s:
b = ""
for j in range(ord(i)):
b += "+"
b += '.>'
print (b)
``` | output | 1 | 71,278 | 20 | 142,557 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs. | instruction | 0 | 71,279 | 20 | 142,558 |
Tags: *special
Correct Solution:
```
n = str(eval(input()))
for j in n:
for _ in range(ord(j)): print('+')
print('.')
for _ in range(ord(j)): print('-')
``` | output | 1 | 71,279 | 20 | 142,559 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs. | instruction | 0 | 71,280 | 20 | 142,560 |
Tags: *special
Correct Solution:
```
line = input()
line = line.replace('+', ' +')
line = line.replace('-', ' -')
val = 0
for tok in line.split():
val += int(tok)
print('++++++++++++++++++++++++++++++++++++++++++++++++')
li = []
def foo(num):
if num < 10:
li.append(num)
return
foo(num//10)
li.append(num%10)
foo(val)
for d in li:
print('+'*d, '.', '-'*d)
``` | output | 1 | 71,280 | 20 | 142,561 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs. | instruction | 0 | 71,281 | 20 | 142,562 |
Tags: *special
Correct Solution:
```
exp = input()
ans = str(eval(exp))
print(ans)
for digit in ans:
print('+' * ord(ascii(int(digit))) + ".>", end='\n')
``` | output | 1 | 71,281 | 20 | 142,563 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs. | instruction | 0 | 71,282 | 20 | 142,564 |
Tags: *special
Correct Solution:
```
n = eval(input())
for c in str(n):
print('>')
print('+' * ord(c) + '.')
``` | output | 1 | 71,282 | 20 | 142,565 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs. | instruction | 0 | 71,283 | 20 | 142,566 |
Tags: *special
Correct Solution:
```
res = ''
for c in str(eval(input())):
res += '+'*ord(c) + '.>'
print(res)
``` | output | 1 | 71,283 | 20 | 142,567 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs. | instruction | 0 | 71,284 | 20 | 142,568 |
Tags: *special
Correct Solution:
```
import re
def printNum(n):
for i in range(n):
print('+', end='')
string = input()
strings = re.split("([+-])", string)
terms = [int(strings[0])]
i = 1
while i < len(strings):
if strings[i] == '+':
terms.append(int(strings[i + 1]))
i += 2
i = 1
while i < len(strings):
if strings[i] == '-':
terms.append(-int(strings[i + 1]))
i += 2
printNum(terms[0])
i = 1
while i < len(terms):
print(">")
if terms[i] > 0:
printNum(terms[i])
print('>')
print("<[<+>-]<")
elif terms[i] < 0:
printNum(-terms[i])
print('>')
print("<[<->-]<")
i+=1
print("[>>+>+<<<-]>>>[<<<+>>>-]<<+>[<->[>++++++++++<[->-[>+>>]>[+[-<+>]>+>>]<<<<<]>[-]++++++++[<++++++>-]>[<<+>>-]>[<<+>>-]<<]>]<[->>++++++++[<++++++>-]]<[.[-]<]<")
``` | output | 1 | 71,284 | 20 | 142,569 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs.
Submitted Solution:
```
s = str(eval(input()))
for c in s:
print('+' * ord(c) + '.' + '>')
``` | instruction | 0 | 71,285 | 20 | 142,570 |
Yes | output | 1 | 71,285 | 20 | 142,571 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs.
Submitted Solution:
```
n = str(eval(input()))
for i in range(0, 10):
for x in range(0, 48 + i):
print("+", end="")
print(">", end="")
print("<<<<<<<<<<", end="")
p = 0
for x in range(0, len(n)):
while p != int(n[x]):
if p < int(n[x]):
p += 1
print(">", end="")
else:
p -= 1
print("<", end="")
print(".", end="")
``` | instruction | 0 | 71,286 | 20 | 142,572 |
Yes | output | 1 | 71,286 | 20 | 142,573 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs.
Submitted Solution:
```
for c in str(eval(input())):
print('+' * ord(c) + '.>')
``` | instruction | 0 | 71,287 | 20 | 142,574 |
Yes | output | 1 | 71,287 | 20 | 142,575 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs.
Submitted Solution:
```
s = input()
x = eval(s)
print('+' * x)
print('>>++++++++++<<[->+>-[>+>>]>[+[-<+>]>+>>]<<<<<<]>>[-]>>>++++++++++<[->-[>+>>]>[+[-<+>]>+>>]<<<<<]>[-]>>[>++++++[-<++++++++>]<.<<+>+>[-]]<[<[->-<]++++++[->++++++++<]>.[-]]<<++++++[-<++++++++>]<.[-]<<[-<+>]')
``` | instruction | 0 | 71,288 | 20 | 142,576 |
Yes | output | 1 | 71,288 | 20 | 142,577 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs.
Submitted Solution:
```
print(''.join(["+"*ord(x) for x in str(eval(input()))])+".>")
``` | instruction | 0 | 71,289 | 20 | 142,578 |
No | output | 1 | 71,289 | 20 | 142,579 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs.
Submitted Solution:
```
print("+++++")
``` | instruction | 0 | 71,290 | 20 | 142,580 |
No | output | 1 | 71,290 | 20 | 142,581 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs.
Submitted Solution:
```
p = eval(input().replace('/', '//'))
base = 1
while base * 10 <= p:
base *= 10
lastnum = 0
while p > 0:
num = ord(str(p // base))
if num > lastnum:
print('+' * (num - lastnum) + '.' )
else:
print('-' * (lastnum - num) + '.' )
lastnum = num
p -= p // base * base
base //= 10
``` | instruction | 0 | 71,291 | 20 | 142,582 |
No | output | 1 | 71,291 | 20 | 142,583 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you will write a simple generator of Brainfuck (<https://en.wikipedia.org/wiki/Brainfuck>) calculators.
You are given an arithmetic expression consisting of integers from 0 to 255 and addition/subtraction signs between them. Output a Brainfuck program which, when executed, will print the result of evaluating this expression.
We use a fairly standard Brainfuck interpreter for checking the programs:
* 30000 memory cells.
* memory cells store integers from 0 to 255 with unsigned 8-bit wraparound.
* console input (, command) is not supported, but it's not needed for this problem.
Input
The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive. The calculations result is guaranteed to be an integer between 0 and 255, inclusive (results of intermediary calculations might be outside of these boundaries).
Output
Output a Brainfuck program which, when executed, will print the result of evaluating this expression. The program must be at most 5000000 characters long (including the non-command characters), and its execution must be complete in at most 50000000 steps.
Examples
Input
2+3
Output
++>
+++>
<[<+>-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Input
9-7
Output
+++++++++>
+++++++>
<[<->-]<
++++++++++++++++++++++++++++++++++++++++++++++++.
Note
You can download the source code of the Brainfuck interpreter by the link [http://assets.codeforces.com/rounds/784/bf.cpp](//assets.codeforces.com/rounds/784/bf.cpp). We use this code to interpret outputs.
Submitted Solution:
```
res = eval(input())
lne = str(res)
for i in lne:
st = ""
for i in range(ord(i) - ord('0')):
st += "+"
st += "."
st += "[-]"
print(st)
``` | instruction | 0 | 71,292 | 20 | 142,584 |
No | output | 1 | 71,292 | 20 | 142,585 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x. | instruction | 0 | 71,314 | 20 | 142,628 |
Tags: brute force, math
Correct Solution:
```
n=int(input())
a=[]
for i in range(100,0,-1):
if n<=i:
continue
x=n-i
if sum(map(int,list(str(x))))==i:
a.append(x)
print(len(a))
for i in range(len(a)):
print(a[i])
``` | output | 1 | 71,314 | 20 | 142,629 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x. | instruction | 0 | 71,315 | 20 | 142,630 |
Tags: brute force, math
Correct Solution:
```
# from debug import debug
from math import ceil, log2
def dig(n):
q = n
v = 0
while q:
v+=q%10
q //= 10
return v+n
n = int(input())
if n == 2:
print(1)
print(1)
else:
d = 0
q = n
while q:
q = q//10
d+=1
store = []
for i in range(max(0, n-9*d), n):
if dig(i) == n:
store.append(i)
print(len(store))
print(*store, sep="\n")
``` | output | 1 | 71,315 | 20 | 142,631 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x. | instruction | 0 | 71,316 | 20 | 142,632 |
Tags: brute force, math
Correct Solution:
```
value = int(input())
def display(lst):
for item in sorted(lst):
print(item)
def sum_a_string(integer):
# print(integer)
return sum([int(d) for d in str(integer)])
def make_all_nine(lenght):
return '9' * lenght
def d_max(value):
svalue = str(value)
value_len = len(svalue)
first = svalue[0]
if value_len == 1:
return value - 1
if first == '1':
return sum_a_string(int(make_all_nine(value_len - 1)))
nines_count = value_len - 1
first = str(int(first) - 1)
return sum_a_string(int(first + make_all_nine(nines_count)))
def itter(value):
count = 0
possible_digits = []
if value == 1:
print(count)
display(possible_digits)
return
min_x = value - d_max(value)
max_x = value
if min_x == max_x:
check_range = [max_x]
else:
check_range = range(min_x, max_x)
for num in check_range:
result = num + sum_a_string(num)
if result == value:
count += 1
possible_digits.append(num)
print(count)
display(possible_digits)
itter(value)
``` | output | 1 | 71,316 | 20 | 142,633 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x. | instruction | 0 | 71,317 | 20 | 142,634 |
Tags: brute force, math
Correct Solution:
```
n=int(input())
m=[]
if n<=18:
a=0
else:
a=n-len(str(n))*9
for i in range(a,n):
x=i
for j in str(i):
x+=int(j)
if n==x:
m.append(i)
print(len(m))
[print(i) for i in m]
``` | output | 1 | 71,317 | 20 | 142,635 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x. | instruction | 0 | 71,318 | 20 | 142,636 |
Tags: brute force, math
Correct Solution:
```
def sum(x):
l=str(x)
i=0
for j in range(len(l)):
i=i+int(l[j])
return i
x=int(input(''))
q=10*(len(str(x)))
q=max(x-q,0)
l=[]
for i in range(q,x):
if ((i+sum(i))==x):
l.append(i)
print(len(l))
for i in range(len(l)):
print(l[i])
``` | output | 1 | 71,318 | 20 | 142,637 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x. | instruction | 0 | 71,319 | 20 | 142,638 |
Tags: brute force, math
Correct Solution:
```
def f(n):
ans = n
while n:
ans += n % 10
n //= 10
return ans
n = int(input())
a = []
for i in range(max(1, n - 200), n):
if f(i) == n:
a.append(i)
print(len(a))
for item in a:
print(item, end = ' ')
``` | output | 1 | 71,319 | 20 | 142,639 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x. | instruction | 0 | 71,320 | 20 | 142,640 |
Tags: brute force, math
Correct Solution:
```
#!/usr/bin/env python3
def digsum(n):
s = 0
while n>0:
s += n%10
n //= 10
return s
def main():
n = int(input())
Sol = []
for d in range(min(n-1,9*9),0,-1):
if digsum(n-d)==d:
Sol.append(n-d)
print(len(Sol))
for x in Sol:
print(x)
main()
``` | output | 1 | 71,320 | 20 | 142,641 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x. | instruction | 0 | 71,321 | 20 | 142,642 |
Tags: brute force, math
Correct Solution:
```
n=int(input())
a=[]
no=0
i=0
while i<82 and i <=n:
b=n-i
b=list(str(b))
z=0
for ele in b:
z+=int(ele)
if i == z:
no+=1
a.append(n-i)
i+=1
a.sort()
print(no)
for ele in a:
print(ele)
``` | output | 1 | 71,321 | 20 | 142,643 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x.
Submitted Solution:
```
n=int(input())
s=len(str(n))
t=max(0,n-9*s)
c=0;l=[]
for i in range(t,n):
m=str(i)
if i+sum([int(i) for i in list(m)])==n:
l.append(i)
c+=1
print(c)
if l!=[]:
for i in l:
print(i)
``` | instruction | 0 | 71,322 | 20 | 142,644 |
Yes | output | 1 | 71,322 | 20 | 142,645 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x.
Submitted Solution:
```
import sys
import math
import bisect
def query_digit_sum(n):
ans = 0
while n:
ans += n % 10
n //= 10
return ans
def solve(n):
A = []
for i in range(1, 100):
if n > i and query_digit_sum(n - i) == i:
A.append(n - i)
A.sort()
return A
def main():
n = int(input())
ans = solve(n)
print(len(ans))
for a in ans:
print(a)
if __name__ == "__main__":
main()
``` | instruction | 0 | 71,323 | 20 | 142,646 |
Yes | output | 1 | 71,323 | 20 | 142,647 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x.
Submitted Solution:
```
def f(x):
res = x
while x:
res += x % 10
x //= 10
return res
n = int(input())
cnt = 0
ans = []
for i in range(max(0, n - 180), n):
if f(i) == n:
cnt += 1
ans.append(i)
print(cnt)
for i in ans:
print(i)
``` | instruction | 0 | 71,324 | 20 | 142,648 |
Yes | output | 1 | 71,324 | 20 | 142,649 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x.
Submitted Solution:
```
s = input()
n = int(s)
digits = len(s)
results = []
for i in range(max(1, n - 9 * digits), n):
if i + sum(map(int, str(i))) == n:
results.append(i)
print(len(results))
if len(results) > 0:
for r in results:
print(r)
``` | instruction | 0 | 71,325 | 20 | 142,650 |
Yes | output | 1 | 71,325 | 20 | 142,651 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x.
Submitted Solution:
```
n=int(input())
result = []
for i in range(n//2, int(n//1.1)):
sum=i
i_s = str(i)
for j in range(len(i_s)):
sum+=int(i_s[j])
if sum == n: result.append(i)
print(len(result))
for value in result:print(value)
``` | instruction | 0 | 71,326 | 20 | 142,652 |
No | output | 1 | 71,326 | 20 | 142,653 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x.
Submitted Solution:
```
n = int(input())
results = []
if len(str(n)) == 1:
print(1, '\n')
print(n)
else:
for i in range(10, n):
string_num = str(i)
sum = i
for letter in string_num:
sum += int(letter)
if sum == n:
results.append(i)
print(len(results))
if len(results) > 0:
for i in results:
print(i)
``` | instruction | 0 | 71,327 | 20 | 142,654 |
No | output | 1 | 71,327 | 20 | 142,655 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x.
Submitted Solution:
```
#NYAN NYAN
#░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
#░░░░░░░░░░▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄░░░░░░░░░
#░░░░░░░░▄▀░░░░░░░░░░░░▄░░░░░░░▀▄░░░░░░░
#░░░░░░░░█░░▄░░░░▄░░░░░░░░░░░░░░█░░░░░░░
#░░░░░░░░█░░░░░░░░░░░░▄█▄▄░░▄░░░█░▄▄▄░░░
#░▄▄▄▄▄░░█░░░░░░▀░░░░▀█░░▀▄░░░░░█▀▀░██░░
#░██▄▀██▄█░░░▄░░░░░░░██░░░░▀▀▀▀▀░░░░██░░
#░░▀██▄▀██░░░░░░░░▀░██▀░░░░░░░░░░░░░▀██░
#░░░░▀████░▀░░░░▄░░░██░░░▄█░░░░▄░▄█░░██░
#░░░░░░░▀█░░░░▄░░░░░██░░░░▄░░░▄░░▄░░░██░
#░░░░░░░▄█▄░░░░░░░░░░░▀▄░░▀▀▀▀▀▀▀▀░░▄▀░░
#░░░░░░█▀▀█████████▀▀▀▀████████████▀░░░░
#░░░░░░████▀░░███▀░░░░░░▀███░░▀██▀░░░░░░
#░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
import os
import sys
import fileinput
import codecs
import operator
import functools
import math
inval = None
file = None
Debug = True
def readSequence(inputLine=None, elementType=int, seperator=' ', strip=True):
global file
if (inputLine == None):
inputLine = file.readline()
if strip:
inputLine = inputLine.strip()
return [elementType(x) for x in inputLine.split(seperator)]
def C(n, r):
r = min(r, (n - r))
if (r == 0):
return 1
if (r < 0):
return 0
numer = functools.reduce(operator.mul, range(n, (n - r), (- 1)))
denom = functools.reduce(operator.mul, range(1, (r + 1)))
return (numer // denom)
def sumdigit(num):
num = str(num)
r = 0
for x in num:
r = (r + int(x))
pass
return r
def digitListToInt(numList):
return int(''.join(map(str, numList)))
def listByDigit(digitLen):
return [0 for _ in range(digitLen)]
def F(n, k):
ans = 0
for x in range(1, n):
ans = (ans + (x * C((n - x), (k - 1))))
pass
return ans
pass
def keyWithMaxValue(d1: dict):
v = list(d1.values())
return list(d1.keys())[v.index(max(v))]
def checkProperIrreducible(a, b):
if (a == 1):
return True
if (a == b):
return False
if (a > b):
return checkProperIrreducible(b, a)
else:
return checkProperIrreducible(a, (b - a))
class MultiArray(object):
def MultiArray(defaultList, listCount):
this.Lists[0] = defaultList
for i in range(1, listCount):
this.Lists[i] = list()
pass
def MultiArray(listCount):
for i in range(listCount):
this.Lists[i] = list()
pass
def MakeRankList(idx):
input = this.Lists[0]
output = ([0] * len(input))
for (i, x) in enumerate(sorted(range(len(input)), key=(lambda y: input[y]))):
output[x] = i
this.Lists[idx] = output
pass
pass
def solve():
solvec()
pass
def ToSpaceSeperatedString(targetList):
return ' '.join(map(str, targetList))
ans = list()
def solvec():
rs = RobertsSpaceIndustries = readSequence
li = rs()
n = li[0]
logn = math.log10(n)
k = 0
arr = [0]
digitList = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
remain = n
remainlog = math.log10(remain)
curlog = math.floor(math.log10(n))
go(n, curlog, 0)
if (len(ans) == 0):
print(0)
else:
print(len(ans))
for x in ans:
print(round(x))
pass
def go(remainNum, curDigit, currentAnsNum):
global ans
if (remainNum == 0):
ans.append(currentAnsNum)
if (curDigit == 0):
for i in range(10):
if (remainNum == (i * 2)):
ans.append((currentAnsNum + i))
pass
return
curlog = curDigit
nextlog = (curlog - 1)
curcoeff = (1 + math.pow(10, curlog))
nextcoeff = (1 + math.pow(10, nextlog))
bmin = 9
bmax = 0
for i in reversed(range(10)):
if ((curcoeff * i) < remainNum):
bmax = i
if (curcoeff > 1):
bmin = ((i - 3) if ((i - 3) >= 0) else 0)
else:
bmin = 0
break
pass
for x in range(bmin, (bmax + 1)):
go((remainNum - (curcoeff * x)), (curDigit - 1), (currentAnsNum + (math.pow(10, curlog) * x)))
pass
pass
def solveb():
rs = RobertsSpaceIndustries = readSequence
li = rs()
(n, k, m) = (li[0], li[1], li[2])
arr = rs()
buckets = list()
for i in range(m):
buckets.append(list())
pass
for x in arr:
div = (x % m)
buckets[div].append(x)
pass
for j in range(len(buckets)):
if (len(buckets[j]) >= k):
print('Yes')
ansli = buckets[j][:k]
print(ToSpaceSeperatedString(ansli))
return
print('No')
pass
def solve1():
global file
rl = file.readline
rs = RobertsSpaceIndustries = readSequence
li = rs()
(n, x) = (li[0], li[1])
li = rs()
arr = ([0] * 110)
for j in range(len(li)):
arr[li[j]] += 1
pass
k = 0
switched = 0
while (k <= x):
if ((x == k) and (arr[k] == 1)):
switched += 1
break
elif (k < x):
if (arr[k] == 0):
switched += 1
pass
k += 1
pass
print(switched)
pass
def solve2():
rs = RobertsSpaceIndustries = readSequence
n = rs()[0]
a = rs()[0]
b = rs()[0]
c = rs()[0]
ans = 0
cur = 0
n -= 1
while (n > 0):
mini = 999
if (cur == 0):
mini = min(a, b)
if (mini == a):
cur = 1
else:
cur = 2
elif (cur == 1):
mini = min(a, c)
if (mini == a):
cur = 0
else:
cur = 2
else:
mini = min(b, c)
if (mini == b):
cur = 0
else:
cur = 1
n -= 1
ans += mini
print(ans)
pass
def solveTemplate():
global file
rl = file.readline
rs = RobertsSpaceIndustries = readSequence
li = rs()
(n, x) = (li[0], li[1])
pass
inval = None
file = fileinput.input(inval)
solve()
``` | instruction | 0 | 71,328 | 20 | 142,656 |
No | output | 1 | 71,328 | 20 | 142,657 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer x was given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.
Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.
Input
The first line contains integer n (1 ≤ n ≤ 109).
Output
In the first line print one integer k — number of different values of x satisfying the condition.
In next k lines print these values in ascending order.
Examples
Input
21
Output
1
15
Input
20
Output
0
Note
In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.
In the second test case there are no such x.
Submitted Solution:
```
n = int(input())
m = len(str(n))*9
if m > n:
m = n
count = 0
values = []
for x in range(1, m+1):
temp = str(n-x)
temp1 = 0
for i in temp:
temp1 += int(i)
if int(temp)+temp1 == n:
count += 1
values.append(temp)
print(count)
values.sort()
for each in values:
print(each)
``` | instruction | 0 | 71,329 | 20 | 142,658 |
No | output | 1 | 71,329 | 20 | 142,659 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After learning about polynomial hashing, Heidi decided to learn about shift-xor hashing. In particular, she came across this interesting problem.
Given a bitstring y ∈ \{0,1\}^n find out the number of different k (0 ≤ k < n) such that there exists x ∈ \{0,1\}^n for which y = x ⊕ \mbox{shift}^k(x).
In the above, ⊕ is the xor operation and \mbox{shift}^k is the operation of shifting a bitstring cyclically to the right k times. For example, 001 ⊕ 111 = 110 and \mbox{shift}^3(00010010111000) = 00000010010111.
Input
The first line contains an integer n (1 ≤ n ≤ 2 ⋅ 10^5), the length of the bitstring y.
The second line contains the bitstring y.
Output
Output a single integer: the number of suitable values of k.
Example
Input
4
1010
Output
3
Note
In the first example:
* 1100⊕ \mbox{shift}^1(1100) = 1010
* 1000⊕ \mbox{shift}^2(1000) = 1010
* 0110⊕ \mbox{shift}^3(0110) = 1010
There is no x such that x ⊕ x = 1010, hence the answer is 3. | instruction | 0 | 71,728 | 20 | 143,456 |
Tags: brute force, number theory
Correct Solution:
```
import sys
import math
n = int(sys.stdin.readline().strip())
s = sys.stdin.readline().strip()
a = [1] * n
for c in s:
if c != '0':
a[0] = 0
for k in range(1, n):
if n % k == 0:
for i in range(k):
t = 0
for j in range(i, n, k):
if s[j] != '0':
t += 1
if t % 2 != 0:
a[k] = 0
else:
a[k] = a[math.gcd(n, k)]
sys.stdout.write('{0}\n'.format(sum(a)))
``` | output | 1 | 71,728 | 20 | 143,457 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After learning about polynomial hashing, Heidi decided to learn about shift-xor hashing. In particular, she came across this interesting problem.
Given a bitstring y ∈ \{0,1\}^n find out the number of different k (0 ≤ k < n) such that there exists x ∈ \{0,1\}^n for which y = x ⊕ \mbox{shift}^k(x).
In the above, ⊕ is the xor operation and \mbox{shift}^k is the operation of shifting a bitstring cyclically to the right k times. For example, 001 ⊕ 111 = 110 and \mbox{shift}^3(00010010111000) = 00000010010111.
Input
The first line contains an integer n (1 ≤ n ≤ 2 ⋅ 10^5), the length of the bitstring y.
The second line contains the bitstring y.
Output
Output a single integer: the number of suitable values of k.
Example
Input
4
1010
Output
3
Note
In the first example:
* 1100⊕ \mbox{shift}^1(1100) = 1010
* 1000⊕ \mbox{shift}^2(1000) = 1010
* 0110⊕ \mbox{shift}^3(0110) = 1010
There is no x such that x ⊕ x = 1010, hence the answer is 3. | instruction | 0 | 71,729 | 20 | 143,458 |
Tags: brute force, number theory
Correct Solution:
```
from collections import deque
import math
num = int(input())
x = tuple(map(int, list(input())))
#if x == "0"*num: print(num); exit()
integer = 0
dic = dict()
for i in range(1,num+1):
a = math.gcd(i,num)
if a in dic:
integer += dic[a]
else:
lijst = [0]*a
for j in range(num):
b = j%a
lijst[b] += x[j]
for k in range(a):
if lijst[k]%2 != 0:
dic[a] = 0
break
else:
integer += 1
dic[a] = 1
print(integer)
``` | output | 1 | 71,729 | 20 | 143,459 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After learning about polynomial hashing, Heidi decided to learn about shift-xor hashing. In particular, she came across this interesting problem.
Given a bitstring y ∈ \{0,1\}^n find out the number of different k (0 ≤ k < n) such that there exists x ∈ \{0,1\}^n for which y = x ⊕ \mbox{shift}^k(x).
In the above, ⊕ is the xor operation and \mbox{shift}^k is the operation of shifting a bitstring cyclically to the right k times. For example, 001 ⊕ 111 = 110 and \mbox{shift}^3(00010010111000) = 00000010010111.
Input
The first line contains an integer n (1 ≤ n ≤ 2 ⋅ 10^5), the length of the bitstring y.
The second line contains the bitstring y.
Output
Output a single integer: the number of suitable values of k.
Example
Input
4
1010
Output
3
Note
In the first example:
* 1100⊕ \mbox{shift}^1(1100) = 1010
* 1000⊕ \mbox{shift}^2(1000) = 1010
* 0110⊕ \mbox{shift}^3(0110) = 1010
There is no x such that x ⊕ x = 1010, hence the answer is 3. | instruction | 0 | 71,730 | 20 | 143,460 |
Tags: brute force, number theory
Correct Solution:
```
import math
num = int(input())
x = tuple(map(int, list(input())))
integer = 0
dic = dict()
for i in range(1,num+1):
a = math.gcd(i,num)
if a in dic:
integer += dic[a]
else:
lijst = [0]*a
for j in range(num):
b = j%a
lijst[b] += x[j]
for k in range(a):
if lijst[k]%2 != 0:
dic[a] = 0
break
else:
integer += 1
dic[a] = 1
print(integer)
``` | output | 1 | 71,730 | 20 | 143,461 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After learning about polynomial hashing, Heidi decided to learn about shift-xor hashing. In particular, she came across this interesting problem.
Given a bitstring y ∈ \{0,1\}^n find out the number of different k (0 ≤ k < n) such that there exists x ∈ \{0,1\}^n for which y = x ⊕ \mbox{shift}^k(x).
In the above, ⊕ is the xor operation and \mbox{shift}^k is the operation of shifting a bitstring cyclically to the right k times. For example, 001 ⊕ 111 = 110 and \mbox{shift}^3(00010010111000) = 00000010010111.
Input
The first line contains an integer n (1 ≤ n ≤ 2 ⋅ 10^5), the length of the bitstring y.
The second line contains the bitstring y.
Output
Output a single integer: the number of suitable values of k.
Example
Input
4
1010
Output
3
Note
In the first example:
* 1100⊕ \mbox{shift}^1(1100) = 1010
* 1000⊕ \mbox{shift}^2(1000) = 1010
* 0110⊕ \mbox{shift}^3(0110) = 1010
There is no x such that x ⊕ x = 1010, hence the answer is 3. | instruction | 0 | 71,731 | 20 | 143,462 |
Tags: brute force, number theory
Correct Solution:
```
import sys
import math
n = int(sys.stdin.readline().strip())
s = sys.stdin.readline().strip()
a = [1] * n
for c in s:
if c != '0':
a[0] = 0
for k in range(1, n):
if n % k == 0:
t = [0] * k
for i, c in enumerate(s):
if c != '0':
t[i % k] += 1
if sum([_ % 2 for _ in t]) != 0:
a[k] = 0
else:
a[k] = a[math.gcd(n, k)]
sys.stdout.write('{0}\n'.format(sum(a)))
``` | output | 1 | 71,731 | 20 | 143,463 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After learning about polynomial hashing, Heidi decided to learn about shift-xor hashing. In particular, she came across this interesting problem.
Given a bitstring y ∈ \{0,1\}^n find out the number of different k (0 ≤ k < n) such that there exists x ∈ \{0,1\}^n for which y = x ⊕ \mbox{shift}^k(x).
In the above, ⊕ is the xor operation and \mbox{shift}^k is the operation of shifting a bitstring cyclically to the right k times. For example, 001 ⊕ 111 = 110 and \mbox{shift}^3(00010010111000) = 00000010010111.
Input
The first line contains an integer n (1 ≤ n ≤ 2 ⋅ 10^5), the length of the bitstring y.
The second line contains the bitstring y.
Output
Output a single integer: the number of suitable values of k.
Example
Input
4
1010
Output
3
Note
In the first example:
* 1100⊕ \mbox{shift}^1(1100) = 1010
* 1000⊕ \mbox{shift}^2(1000) = 1010
* 0110⊕ \mbox{shift}^3(0110) = 1010
There is no x such that x ⊕ x = 1010, hence the answer is 3. | instruction | 0 | 71,732 | 20 | 143,464 |
Tags: brute force, number theory
Correct Solution:
```
from math import gcd
def canHash(n, ln):
if n == '0'*ln:
return ln
ans = 0
yes = []
for i in range(1, ln):
if ln%i == 0:
token = 1
for k in range(i):
a = sum([int(b) for b in n[k::i]])
if a%2 != 0:
token = 0
if token == 1:
yes.append(i)
ans += 1
else:
if gcd(ln, i) in yes:
ans += 1
return ans
if __name__ == '__main__':
ln = int(input())
print(canHash(input(), ln))
``` | output | 1 | 71,732 | 20 | 143,465 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.