message stringlengths 2 11.9k | message_type stringclasses 2 values | message_id int64 0 1 | conversation_id int64 137 108k | cluster float64 18 18 | __index_level_0__ int64 274 217k |
|---|---|---|---|---|---|
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Erelong Leha was bored by calculating of the greatest common divisor of two factorials. Therefore he decided to solve some crosswords. It's well known that it is a very interesting occupation though it can be very difficult from time to time. In the course of solving one of the crosswords, Leha had to solve a simple task. You are able to do it too, aren't you?
Leha has two strings s and t. The hacker wants to change the string s at such way, that it can be found in t as a substring. All the changes should be the following: Leha chooses one position in the string s and replaces the symbol in this position with the question mark "?". The hacker is sure that the question mark in comparison can play the role of an arbitrary symbol. For example, if he gets string s="ab?b" as a result, it will appear in t="aabrbb" as a substring.
Guaranteed that the length of the string s doesn't exceed the length of the string t. Help the hacker to replace in s as few symbols as possible so that the result of the replacements can be found in t as a substring. The symbol "?" should be considered equal to any other symbol.
Input
The first line contains two integers n and m (1 ≤ n ≤ m ≤ 1000) — the length of the string s and the length of the string t correspondingly.
The second line contains n lowercase English letters — string s.
The third line contains m lowercase English letters — string t.
Output
In the first line print single integer k — the minimal number of symbols that need to be replaced.
In the second line print k distinct integers denoting the positions of symbols in the string s which need to be replaced. Print the positions in any order. If there are several solutions print any of them. The numbering of the positions begins from one.
Examples
Input
3 5
abc
xaybz
Output
2
2 3
Input
4 10
abcd
ebceabazcd
Output
1
2
Submitted Solution:
```
a,b=map(int,input().split());z=input();z1=input();q=["0"]*a
for i in range(b-a+1):
k=[]
for j in range(a):
if z1[i+j]!=z[j]:k+=[j+1]
if len(k)<=len(q):q=k
print(len(q),"\n",*q)
``` | instruction | 0 | 41,745 | 18 | 83,490 |
Yes | output | 1 | 41,745 | 18 | 83,491 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Erelong Leha was bored by calculating of the greatest common divisor of two factorials. Therefore he decided to solve some crosswords. It's well known that it is a very interesting occupation though it can be very difficult from time to time. In the course of solving one of the crosswords, Leha had to solve a simple task. You are able to do it too, aren't you?
Leha has two strings s and t. The hacker wants to change the string s at such way, that it can be found in t as a substring. All the changes should be the following: Leha chooses one position in the string s and replaces the symbol in this position with the question mark "?". The hacker is sure that the question mark in comparison can play the role of an arbitrary symbol. For example, if he gets string s="ab?b" as a result, it will appear in t="aabrbb" as a substring.
Guaranteed that the length of the string s doesn't exceed the length of the string t. Help the hacker to replace in s as few symbols as possible so that the result of the replacements can be found in t as a substring. The symbol "?" should be considered equal to any other symbol.
Input
The first line contains two integers n and m (1 ≤ n ≤ m ≤ 1000) — the length of the string s and the length of the string t correspondingly.
The second line contains n lowercase English letters — string s.
The third line contains m lowercase English letters — string t.
Output
In the first line print single integer k — the minimal number of symbols that need to be replaced.
In the second line print k distinct integers denoting the positions of symbols in the string s which need to be replaced. Print the positions in any order. If there are several solutions print any of them. The numbering of the positions begins from one.
Examples
Input
3 5
abc
xaybz
Output
2
2 3
Input
4 10
abcd
ebceabazcd
Output
1
2
Submitted Solution:
```
def cross_word (lens,lent,s,t):
i = 0
ans = []
while i <= lent - lens :
sub_ans = []
change = 0
sub = t[i:i+lens]
for x in range(lens):
if sub[x] != s[x]:
sub_ans.append(x+1)
change += 1
sub_ans.insert(0,change)
ans.append(sub_ans)
i += 1
smallest = min([x[0] for x in ans])
for k in ans:
if k[0] == smallest:
k = list(map(str,k))
return str(k[0]) + "\n" + " ".join(k[1:])
lens,lent = list(map(int,input().split()))
s = input()
t = input()
print (cross_word(lens,lent,s,t))
``` | instruction | 0 | 41,746 | 18 | 83,492 |
Yes | output | 1 | 41,746 | 18 | 83,493 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Erelong Leha was bored by calculating of the greatest common divisor of two factorials. Therefore he decided to solve some crosswords. It's well known that it is a very interesting occupation though it can be very difficult from time to time. In the course of solving one of the crosswords, Leha had to solve a simple task. You are able to do it too, aren't you?
Leha has two strings s and t. The hacker wants to change the string s at such way, that it can be found in t as a substring. All the changes should be the following: Leha chooses one position in the string s and replaces the symbol in this position with the question mark "?". The hacker is sure that the question mark in comparison can play the role of an arbitrary symbol. For example, if he gets string s="ab?b" as a result, it will appear in t="aabrbb" as a substring.
Guaranteed that the length of the string s doesn't exceed the length of the string t. Help the hacker to replace in s as few symbols as possible so that the result of the replacements can be found in t as a substring. The symbol "?" should be considered equal to any other symbol.
Input
The first line contains two integers n and m (1 ≤ n ≤ m ≤ 1000) — the length of the string s and the length of the string t correspondingly.
The second line contains n lowercase English letters — string s.
The third line contains m lowercase English letters — string t.
Output
In the first line print single integer k — the minimal number of symbols that need to be replaced.
In the second line print k distinct integers denoting the positions of symbols in the string s which need to be replaced. Print the positions in any order. If there are several solutions print any of them. The numbering of the positions begins from one.
Examples
Input
3 5
abc
xaybz
Output
2
2 3
Input
4 10
abcd
ebceabazcd
Output
1
2
Submitted Solution:
```
firstLength, secondLength = map(int, input().split())
firstEntry, secondEntry = input(), input()
result = [];
limit = 999999;
x=0;
y=0;
aux = [];
for x in range(secondLength - firstLength + 1):
aux = []
for y in range(firstLength):
if(firstEntry[y] != secondEntry[x+y]):
aux.append(y)
if(len(aux) < limit):
result = aux
limit = len(aux)
print(limit)
r=0;
for r in result:
print(r+1, end =" ")
``` | instruction | 0 | 41,747 | 18 | 83,494 |
Yes | output | 1 | 41,747 | 18 | 83,495 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Erelong Leha was bored by calculating of the greatest common divisor of two factorials. Therefore he decided to solve some crosswords. It's well known that it is a very interesting occupation though it can be very difficult from time to time. In the course of solving one of the crosswords, Leha had to solve a simple task. You are able to do it too, aren't you?
Leha has two strings s and t. The hacker wants to change the string s at such way, that it can be found in t as a substring. All the changes should be the following: Leha chooses one position in the string s and replaces the symbol in this position with the question mark "?". The hacker is sure that the question mark in comparison can play the role of an arbitrary symbol. For example, if he gets string s="ab?b" as a result, it will appear in t="aabrbb" as a substring.
Guaranteed that the length of the string s doesn't exceed the length of the string t. Help the hacker to replace in s as few symbols as possible so that the result of the replacements can be found in t as a substring. The symbol "?" should be considered equal to any other symbol.
Input
The first line contains two integers n and m (1 ≤ n ≤ m ≤ 1000) — the length of the string s and the length of the string t correspondingly.
The second line contains n lowercase English letters — string s.
The third line contains m lowercase English letters — string t.
Output
In the first line print single integer k — the minimal number of symbols that need to be replaced.
In the second line print k distinct integers denoting the positions of symbols in the string s which need to be replaced. Print the positions in any order. If there are several solutions print any of them. The numbering of the positions begins from one.
Examples
Input
3 5
abc
xaybz
Output
2
2 3
Input
4 10
abcd
ebceabazcd
Output
1
2
Submitted Solution:
```
n,m = map(int,input().split())
s=input()
t=input()
ans=[0]*(len(t) - len(s) + 1)
for i in range(len(t) - len(s) + 1):
for j in range(len(s)):
if(t[i+j] == s[j]):
ans[i] +=1
pt = max(ans)
ind = ans.index(pt)
j=0
print(ans)
lol=''
ctr=0
for i in range(ind, ind+len(s)):
if(t[i] != s[j]):
lol+=str(j+1)+" "
ctr+=1
j+=1
print(ctr)
print(lol[:-1])
``` | instruction | 0 | 41,748 | 18 | 83,496 |
No | output | 1 | 41,748 | 18 | 83,497 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Erelong Leha was bored by calculating of the greatest common divisor of two factorials. Therefore he decided to solve some crosswords. It's well known that it is a very interesting occupation though it can be very difficult from time to time. In the course of solving one of the crosswords, Leha had to solve a simple task. You are able to do it too, aren't you?
Leha has two strings s and t. The hacker wants to change the string s at such way, that it can be found in t as a substring. All the changes should be the following: Leha chooses one position in the string s and replaces the symbol in this position with the question mark "?". The hacker is sure that the question mark in comparison can play the role of an arbitrary symbol. For example, if he gets string s="ab?b" as a result, it will appear in t="aabrbb" as a substring.
Guaranteed that the length of the string s doesn't exceed the length of the string t. Help the hacker to replace in s as few symbols as possible so that the result of the replacements can be found in t as a substring. The symbol "?" should be considered equal to any other symbol.
Input
The first line contains two integers n and m (1 ≤ n ≤ m ≤ 1000) — the length of the string s and the length of the string t correspondingly.
The second line contains n lowercase English letters — string s.
The third line contains m lowercase English letters — string t.
Output
In the first line print single integer k — the minimal number of symbols that need to be replaced.
In the second line print k distinct integers denoting the positions of symbols in the string s which need to be replaced. Print the positions in any order. If there are several solutions print any of them. The numbering of the positions begins from one.
Examples
Input
3 5
abc
xaybz
Output
2
2 3
Input
4 10
abcd
ebceabazcd
Output
1
2
Submitted Solution:
```
n,m=map(int,input().split())
s=input()
t=input()
max=0
matches=0
list1=[]
list2=[]
for i in range(m-n+1):
list1.clear()
matches=0
for j in range(0,n,1):
if s[j]==t[i+j]:
matches+=1
else:
list1.append(j+1)
if matches>max:
list2.clear()
max=matches
list2=list1.copy()
print(len(list2))
print(' '.join(str(x) for x in list2))
``` | instruction | 0 | 41,749 | 18 | 83,498 |
No | output | 1 | 41,749 | 18 | 83,499 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Erelong Leha was bored by calculating of the greatest common divisor of two factorials. Therefore he decided to solve some crosswords. It's well known that it is a very interesting occupation though it can be very difficult from time to time. In the course of solving one of the crosswords, Leha had to solve a simple task. You are able to do it too, aren't you?
Leha has two strings s and t. The hacker wants to change the string s at such way, that it can be found in t as a substring. All the changes should be the following: Leha chooses one position in the string s and replaces the symbol in this position with the question mark "?". The hacker is sure that the question mark in comparison can play the role of an arbitrary symbol. For example, if he gets string s="ab?b" as a result, it will appear in t="aabrbb" as a substring.
Guaranteed that the length of the string s doesn't exceed the length of the string t. Help the hacker to replace in s as few symbols as possible so that the result of the replacements can be found in t as a substring. The symbol "?" should be considered equal to any other symbol.
Input
The first line contains two integers n and m (1 ≤ n ≤ m ≤ 1000) — the length of the string s and the length of the string t correspondingly.
The second line contains n lowercase English letters — string s.
The third line contains m lowercase English letters — string t.
Output
In the first line print single integer k — the minimal number of symbols that need to be replaced.
In the second line print k distinct integers denoting the positions of symbols in the string s which need to be replaced. Print the positions in any order. If there are several solutions print any of them. The numbering of the positions begins from one.
Examples
Input
3 5
abc
xaybz
Output
2
2 3
Input
4 10
abcd
ebceabazcd
Output
1
2
Submitted Solution:
```
def CalcDif(input:str):
global answer, l1
counter =0
l2= []
for i in range (0,input.__len__()):
if input[i]!=s[i]:
counter+=1
l2.append(int(i+1))
if counter < answer:
l1= l2
answer = counter
input()
s = input()
t = input()
answer = t.__len__()
l1 = []
for i in range(0,t.__len__()-s.__len__()+1):
CalcDif(t[i:i+s.__len__()])
print(answer)
for i in l1:
print(i, end=" ")
``` | instruction | 0 | 41,750 | 18 | 83,500 |
No | output | 1 | 41,750 | 18 | 83,501 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Erelong Leha was bored by calculating of the greatest common divisor of two factorials. Therefore he decided to solve some crosswords. It's well known that it is a very interesting occupation though it can be very difficult from time to time. In the course of solving one of the crosswords, Leha had to solve a simple task. You are able to do it too, aren't you?
Leha has two strings s and t. The hacker wants to change the string s at such way, that it can be found in t as a substring. All the changes should be the following: Leha chooses one position in the string s and replaces the symbol in this position with the question mark "?". The hacker is sure that the question mark in comparison can play the role of an arbitrary symbol. For example, if he gets string s="ab?b" as a result, it will appear in t="aabrbb" as a substring.
Guaranteed that the length of the string s doesn't exceed the length of the string t. Help the hacker to replace in s as few symbols as possible so that the result of the replacements can be found in t as a substring. The symbol "?" should be considered equal to any other symbol.
Input
The first line contains two integers n and m (1 ≤ n ≤ m ≤ 1000) — the length of the string s and the length of the string t correspondingly.
The second line contains n lowercase English letters — string s.
The third line contains m lowercase English letters — string t.
Output
In the first line print single integer k — the minimal number of symbols that need to be replaced.
In the second line print k distinct integers denoting the positions of symbols in the string s which need to be replaced. Print the positions in any order. If there are several solutions print any of them. The numbering of the positions begins from one.
Examples
Input
3 5
abc
xaybz
Output
2
2 3
Input
4 10
abcd
ebceabazcd
Output
1
2
Submitted Solution:
```
def Q3(entrada1,entrada2,entrada3):
n = int(entrada1[0])
m = int(entrada1[1])
menorMudanca = n+1
numMudancas = 0
idInicial = 0
indexMudancas = ""
for i in range(0,m-n+1):
for j in range(n):
if(entrada2[j] != entrada3[i+j]):
numMudancas+=1
if(menorMudanca > numMudancas):
menorMudanca = numMudancas
idInicial = i
numMudancas = 0
print(menorMudanca)
if(menorMudanca != 0):
for i in range(n):
if(entrada2[i] != entrada3[idInicial+i]):
indexMudancas += str(idInicial+i) + " "
print(indexMudancas.strip())
entrada1 = input().split(" ")
entrada2 = input()
entrada3 = input()
Q3(entrada1,entrada2,entrada3)
``` | instruction | 0 | 41,751 | 18 | 83,502 |
No | output | 1 | 41,751 | 18 | 83,503 |
Provide a correct Python 3 solution for this coding contest problem.
There are N slimes lining up from left to right. The colors of these slimes will be given as a string S of length N consisting of lowercase English letters. The i-th slime from the left has the color that corresponds to the i-th character of S.
Adjacent slimes with the same color will fuse into one larger slime without changing the color. If there were a slime adjacent to this group of slimes before fusion, that slime is now adjacent to the new larger slime.
Ultimately, how many slimes will be there?
Constraints
* 1 \leq N \leq 10^5
* |S| = N
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
N
S
Output
Print the final number of slimes.
Examples
Input
10
aabbbbaaca
Output
5
Input
5
aaaaa
Output
1
Input
20
xxzaffeeeeddfkkkkllq
Output
10 | instruction | 0 | 41,858 | 18 | 83,716 |
"Correct Solution:
```
N=int(input())
S=input()
p=''
r=0
for s in S:
if p!=s:
r+=1
p=s
print(r)
``` | output | 1 | 41,858 | 18 | 83,717 |
Provide a correct Python 3 solution for this coding contest problem.
There are N slimes lining up from left to right. The colors of these slimes will be given as a string S of length N consisting of lowercase English letters. The i-th slime from the left has the color that corresponds to the i-th character of S.
Adjacent slimes with the same color will fuse into one larger slime without changing the color. If there were a slime adjacent to this group of slimes before fusion, that slime is now adjacent to the new larger slime.
Ultimately, how many slimes will be there?
Constraints
* 1 \leq N \leq 10^5
* |S| = N
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
N
S
Output
Print the final number of slimes.
Examples
Input
10
aabbbbaaca
Output
5
Input
5
aaaaa
Output
1
Input
20
xxzaffeeeeddfkkkkllq
Output
10 | instruction | 0 | 41,860 | 18 | 83,720 |
"Correct Solution:
```
N=int(input())
text=input()
x=1
for i in range(N-1):
if text[i]!=text[i+1]:
x+=1
print(x)
``` | output | 1 | 41,860 | 18 | 83,721 |
Provide a correct Python 3 solution for this coding contest problem.
There are N slimes lining up from left to right. The colors of these slimes will be given as a string S of length N consisting of lowercase English letters. The i-th slime from the left has the color that corresponds to the i-th character of S.
Adjacent slimes with the same color will fuse into one larger slime without changing the color. If there were a slime adjacent to this group of slimes before fusion, that slime is now adjacent to the new larger slime.
Ultimately, how many slimes will be there?
Constraints
* 1 \leq N \leq 10^5
* |S| = N
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
N
S
Output
Print the final number of slimes.
Examples
Input
10
aabbbbaaca
Output
5
Input
5
aaaaa
Output
1
Input
20
xxzaffeeeeddfkkkkllq
Output
10 | instruction | 0 | 41,861 | 18 | 83,722 |
"Correct Solution:
```
n = int(input())
s = input()
c=1
for i in range(1,n):
if s[i-1]!=s[i]:
c+=1
print(c)
``` | output | 1 | 41,861 | 18 | 83,723 |
Provide a correct Python 3 solution for this coding contest problem.
There are N slimes lining up from left to right. The colors of these slimes will be given as a string S of length N consisting of lowercase English letters. The i-th slime from the left has the color that corresponds to the i-th character of S.
Adjacent slimes with the same color will fuse into one larger slime without changing the color. If there were a slime adjacent to this group of slimes before fusion, that slime is now adjacent to the new larger slime.
Ultimately, how many slimes will be there?
Constraints
* 1 \leq N \leq 10^5
* |S| = N
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
N
S
Output
Print the final number of slimes.
Examples
Input
10
aabbbbaaca
Output
5
Input
5
aaaaa
Output
1
Input
20
xxzaffeeeeddfkkkkllq
Output
10 | instruction | 0 | 41,862 | 18 | 83,724 |
"Correct Solution:
```
N = int(input())
S = input()
A = 1
for i in range(N-1):
if S[i+1] != S[i]:
A += 1
print(A)
``` | output | 1 | 41,862 | 18 | 83,725 |
Provide a correct Python 3 solution for this coding contest problem.
There are N slimes lining up from left to right. The colors of these slimes will be given as a string S of length N consisting of lowercase English letters. The i-th slime from the left has the color that corresponds to the i-th character of S.
Adjacent slimes with the same color will fuse into one larger slime without changing the color. If there were a slime adjacent to this group of slimes before fusion, that slime is now adjacent to the new larger slime.
Ultimately, how many slimes will be there?
Constraints
* 1 \leq N \leq 10^5
* |S| = N
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
N
S
Output
Print the final number of slimes.
Examples
Input
10
aabbbbaaca
Output
5
Input
5
aaaaa
Output
1
Input
20
xxzaffeeeeddfkkkkllq
Output
10 | instruction | 0 | 41,864 | 18 | 83,728 |
"Correct Solution:
```
k=int(input())
s=input()
a=1
for i in range(k-1):
if s[i]!=s[i+1]:
a+=1
print(a)
``` | output | 1 | 41,864 | 18 | 83,729 |
Provide a correct Python 3 solution for this coding contest problem.
There are N slimes lining up from left to right. The colors of these slimes will be given as a string S of length N consisting of lowercase English letters. The i-th slime from the left has the color that corresponds to the i-th character of S.
Adjacent slimes with the same color will fuse into one larger slime without changing the color. If there were a slime adjacent to this group of slimes before fusion, that slime is now adjacent to the new larger slime.
Ultimately, how many slimes will be there?
Constraints
* 1 \leq N \leq 10^5
* |S| = N
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
N
S
Output
Print the final number of slimes.
Examples
Input
10
aabbbbaaca
Output
5
Input
5
aaaaa
Output
1
Input
20
xxzaffeeeeddfkkkkllq
Output
10 | instruction | 0 | 41,865 | 18 | 83,730 |
"Correct Solution:
```
n=int(input())
S=input()
ans=1
for i in range(n-1):
if S[i]!=S[i+1]:
ans+=1
print(ans)
``` | output | 1 | 41,865 | 18 | 83,731 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N slimes lining up from left to right. The colors of these slimes will be given as a string S of length N consisting of lowercase English letters. The i-th slime from the left has the color that corresponds to the i-th character of S.
Adjacent slimes with the same color will fuse into one larger slime without changing the color. If there were a slime adjacent to this group of slimes before fusion, that slime is now adjacent to the new larger slime.
Ultimately, how many slimes will be there?
Constraints
* 1 \leq N \leq 10^5
* |S| = N
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
N
S
Output
Print the final number of slimes.
Examples
Input
10
aabbbbaaca
Output
5
Input
5
aaaaa
Output
1
Input
20
xxzaffeeeeddfkkkkllq
Output
10
Submitted Solution:
```
N = int(input())
S = input() + "."
print(sum([1 if S[i] != S[i+1] else 0 for i in range(N)]))
``` | instruction | 0 | 41,866 | 18 | 83,732 |
Yes | output | 1 | 41,866 | 18 | 83,733 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N slimes lining up from left to right. The colors of these slimes will be given as a string S of length N consisting of lowercase English letters. The i-th slime from the left has the color that corresponds to the i-th character of S.
Adjacent slimes with the same color will fuse into one larger slime without changing the color. If there were a slime adjacent to this group of slimes before fusion, that slime is now adjacent to the new larger slime.
Ultimately, how many slimes will be there?
Constraints
* 1 \leq N \leq 10^5
* |S| = N
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
N
S
Output
Print the final number of slimes.
Examples
Input
10
aabbbbaaca
Output
5
Input
5
aaaaa
Output
1
Input
20
xxzaffeeeeddfkkkkllq
Output
10
Submitted Solution:
```
N=int(input())
S=input()
print(sum(S[n]!=S[n-1] for n in range(1,N))+1)
``` | instruction | 0 | 41,867 | 18 | 83,734 |
Yes | output | 1 | 41,867 | 18 | 83,735 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N slimes lining up from left to right. The colors of these slimes will be given as a string S of length N consisting of lowercase English letters. The i-th slime from the left has the color that corresponds to the i-th character of S.
Adjacent slimes with the same color will fuse into one larger slime without changing the color. If there were a slime adjacent to this group of slimes before fusion, that slime is now adjacent to the new larger slime.
Ultimately, how many slimes will be there?
Constraints
* 1 \leq N \leq 10^5
* |S| = N
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
N
S
Output
Print the final number of slimes.
Examples
Input
10
aabbbbaaca
Output
5
Input
5
aaaaa
Output
1
Input
20
xxzaffeeeeddfkkkkllq
Output
10
Submitted Solution:
```
n=int(input())
s=str(input())
ans=1
for i in range(n-1):
if s[i]!=s[i+1]:
ans+=1
print(ans)
``` | instruction | 0 | 41,868 | 18 | 83,736 |
Yes | output | 1 | 41,868 | 18 | 83,737 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N slimes lining up from left to right. The colors of these slimes will be given as a string S of length N consisting of lowercase English letters. The i-th slime from the left has the color that corresponds to the i-th character of S.
Adjacent slimes with the same color will fuse into one larger slime without changing the color. If there were a slime adjacent to this group of slimes before fusion, that slime is now adjacent to the new larger slime.
Ultimately, how many slimes will be there?
Constraints
* 1 \leq N \leq 10^5
* |S| = N
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
N
S
Output
Print the final number of slimes.
Examples
Input
10
aabbbbaaca
Output
5
Input
5
aaaaa
Output
1
Input
20
xxzaffeeeeddfkkkkllq
Output
10
Submitted Solution:
```
n = int(input())
s = input()
print(sum([s[i]!=s[i-1] for i in range(1,n)])+1)
``` | instruction | 0 | 41,869 | 18 | 83,738 |
Yes | output | 1 | 41,869 | 18 | 83,739 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N slimes lining up from left to right. The colors of these slimes will be given as a string S of length N consisting of lowercase English letters. The i-th slime from the left has the color that corresponds to the i-th character of S.
Adjacent slimes with the same color will fuse into one larger slime without changing the color. If there were a slime adjacent to this group of slimes before fusion, that slime is now adjacent to the new larger slime.
Ultimately, how many slimes will be there?
Constraints
* 1 \leq N \leq 10^5
* |S| = N
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
N
S
Output
Print the final number of slimes.
Examples
Input
10
aabbbbaaca
Output
5
Input
5
aaaaa
Output
1
Input
20
xxzaffeeeeddfkkkkllq
Output
10
Submitted Solution:
```
n = int(input())
s = input()
slimes = s.split("")
i = 0
while i < n - 1:
s = slimes[i]
while s == slimes[i + 1]:
slimes.pop(i + 1)
n -= 1
i += 1
print(n)
``` | instruction | 0 | 41,870 | 18 | 83,740 |
No | output | 1 | 41,870 | 18 | 83,741 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N slimes lining up from left to right. The colors of these slimes will be given as a string S of length N consisting of lowercase English letters. The i-th slime from the left has the color that corresponds to the i-th character of S.
Adjacent slimes with the same color will fuse into one larger slime without changing the color. If there were a slime adjacent to this group of slimes before fusion, that slime is now adjacent to the new larger slime.
Ultimately, how many slimes will be there?
Constraints
* 1 \leq N \leq 10^5
* |S| = N
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
N
S
Output
Print the final number of slimes.
Examples
Input
10
aabbbbaaca
Output
5
Input
5
aaaaa
Output
1
Input
20
xxzaffeeeeddfkkkkllq
Output
10
Submitted Solution:
```
a=int(input())
string=[]
con=0
t=1
for i in range(a):
x=input()
string.append(x)
print(string)
for i in range(a):
if string[i]==string[t]:
continue
else:
t+=1
con+=1
print(con)
``` | instruction | 0 | 41,871 | 18 | 83,742 |
No | output | 1 | 41,871 | 18 | 83,743 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N slimes lining up from left to right. The colors of these slimes will be given as a string S of length N consisting of lowercase English letters. The i-th slime from the left has the color that corresponds to the i-th character of S.
Adjacent slimes with the same color will fuse into one larger slime without changing the color. If there were a slime adjacent to this group of slimes before fusion, that slime is now adjacent to the new larger slime.
Ultimately, how many slimes will be there?
Constraints
* 1 \leq N \leq 10^5
* |S| = N
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
N
S
Output
Print the final number of slimes.
Examples
Input
10
aabbbbaaca
Output
5
Input
5
aaaaa
Output
1
Input
20
xxzaffeeeeddfkkkkllq
Output
10
Submitted Solution:
```
N = int(input())
S = str(input())
ans = ""
ans += S[0]
for i in range(1,N-1):
if S[i] != S[i+1]:
ans += S[i+1]
print(len(ans))
``` | instruction | 0 | 41,872 | 18 | 83,744 |
No | output | 1 | 41,872 | 18 | 83,745 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N slimes lining up from left to right. The colors of these slimes will be given as a string S of length N consisting of lowercase English letters. The i-th slime from the left has the color that corresponds to the i-th character of S.
Adjacent slimes with the same color will fuse into one larger slime without changing the color. If there were a slime adjacent to this group of slimes before fusion, that slime is now adjacent to the new larger slime.
Ultimately, how many slimes will be there?
Constraints
* 1 \leq N \leq 10^5
* |S| = N
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
N
S
Output
Print the final number of slimes.
Examples
Input
10
aabbbbaaca
Output
5
Input
5
aaaaa
Output
1
Input
20
xxzaffeeeeddfkkkkllq
Output
10
Submitted Solution:
```
n=int(input())
S=str(input())
s=list(S)
i=1
while True:
if s[i-1]==s[i]:
s.pop(i)
n -= 1
else:
i +=1
if i >=n:
break
print(len(s))
``` | instruction | 0 | 41,873 | 18 | 83,746 |
No | output | 1 | 41,873 | 18 | 83,747 |
Provide a correct Python 3 solution for this coding contest problem.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes | instruction | 0 | 42,075 | 18 | 84,150 |
"Correct Solution:
```
import sys
d=set()
input()
for e in sys.stdin:
c,g=e.split()
if'i'==c[0]:d|=set([g])
else:print(['no','yes'][g in d])
``` | output | 1 | 42,075 | 18 | 84,151 |
Provide a correct Python 3 solution for this coding contest problem.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes | instruction | 0 | 42,076 | 18 | 84,152 |
"Correct Solution:
```
n = int(input())
dic = {}
for i in range(n):
a = input()
if a[0] == "i":
dic[a[7:]] = 0
else:
print("yes" if a[5:] in dic else "no")
``` | output | 1 | 42,076 | 18 | 84,153 |
Provide a correct Python 3 solution for this coding contest problem.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes | instruction | 0 | 42,077 | 18 | 84,154 |
"Correct Solution:
```
dic = {}
line = []
for i in range(int(input())):
line.append(input().split())
for i in line:
if i[0][0] == "i":
dic[i[1]] = None
else:
print("yes" if i[1] in dic else "no")
``` | output | 1 | 42,077 | 18 | 84,155 |
Provide a correct Python 3 solution for this coding contest problem.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes | instruction | 0 | 42,078 | 18 | 84,156 |
"Correct Solution:
```
dic = {}
for i in range(int(input())):
cmd, arg = input().split()
if cmd == "insert":
dic[arg] = 0
else:
if arg in dic:
print("yes")
else:
print("no")
``` | output | 1 | 42,078 | 18 | 84,157 |
Provide a correct Python 3 solution for this coding contest problem.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes | instruction | 0 | 42,079 | 18 | 84,158 |
"Correct Solution:
```
s = {0}
for i in [*open(0)][1:]:
a, b = i.split()
if a == "insert":
s |= {b}
else:
print("yes" if b in s else "no")
``` | output | 1 | 42,079 | 18 | 84,159 |
Provide a correct Python 3 solution for this coding contest problem.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes | instruction | 0 | 42,080 | 18 | 84,160 |
"Correct Solution:
```
Dict = set()
n = int(input())
for i in range(n):
C = input().split()
if C[0] =="insert":
Dict.add(C[1])
else:
if C[1] in Dict:
print("yes")
else:
print("no")
``` | output | 1 | 42,080 | 18 | 84,161 |
Provide a correct Python 3 solution for this coding contest problem.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes | instruction | 0 | 42,081 | 18 | 84,162 |
"Correct Solution:
```
n = int(input())
h = {}
for _ in range(n):
cmd,val=input().split(' ')
if cmd == "insert":
h[val] = 1
else:
if val in h:
print("yes")
else:
print("no")
``` | output | 1 | 42,081 | 18 | 84,163 |
Provide a correct Python 3 solution for this coding contest problem.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes | instruction | 0 | 42,082 | 18 | 84,164 |
"Correct Solution:
```
d=set()
for _ in[0]*int(input()):
c,g=input().split()
if'i'==c[0]:d|=set([g])
else:print(['no','yes'][g in d])
``` | output | 1 | 42,082 | 18 | 84,165 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes
Submitted Solution:
```
n = int(input())
d = {}
for i in range(n):
cmd = input().split()
if cmd[0] == 'insert':
d[cmd[1]] = i
else:
if cmd[1] in d:
print('yes')
else:
print('no')
``` | instruction | 0 | 42,083 | 18 | 84,166 |
Yes | output | 1 | 42,083 | 18 | 84,167 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes
Submitted Solution:
```
n = int(input())
dict = set()
for i in range(n):
a,b = input().split()
if a=="insert":
dict.add(b)
else:
if b in dict:
print("yes")
else:
print("no")
``` | instruction | 0 | 42,084 | 18 | 84,168 |
Yes | output | 1 | 42,084 | 18 | 84,169 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes
Submitted Solution:
```
def solve():
N = int(input())
dic = {}
for _ in range(N):
command, s = input().split()
if command == 'insert':
dic[s] = 1
elif command == 'find':
print('yes' if s in dic else 'no')
solve()
``` | instruction | 0 | 42,085 | 18 | 84,170 |
Yes | output | 1 | 42,085 | 18 | 84,171 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes
Submitted Solution:
```
n = int(input())
s = set()
for i in range(n):
c, m = input().split()
if c[0] == 'i':
s.add(m)
elif c[0] == 'f':
if m in s:
print('yes')
else:
print('no')
``` | instruction | 0 | 42,086 | 18 | 84,172 |
Yes | output | 1 | 42,086 | 18 | 84,173 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes
Submitted Solution:
```
m = 1046527
n = int(input())
s = []
v = []
for i in range(n):
tmp = input().split()
s.append(str(tmp[0]))
v.append(str(tmp[1]))
def h1(key):
return key % m
def h2(key):
return 1 + key % (m - 1)
def h(key,i):
return ((h1(key) + i * h2(key))) % m
def insert(T,key):
i = 0
while True:
j = h(key,i)
if T[j] == -1:
T[j] = key
return j
else:
i += 1
def search(T,key):
i = 0
while True:
j = h(key,i)
if T[j] == key:
return j
elif T[j] == -1 or i >= m:
return -1
else:
i += 1
def getChar(ch):
if(ch == 'A'):
return 1
elif(ch == 'C'):
return 2
elif(ch == 'G'):
return 3
elif(ch == 'T'):
return 4
else:
return 0
def getKey(string):
sum = 0
p = 1
for i in range(len(string)):
sum += p*getChar(string[i])
p *= 5
return sum
T = [-1]*m
for i in range(n):
val = list(v[i])
key = getKey(val)
if s[i] == 'insert':
insert(T,key)
if s[i] == 'find':
result = search(T,key)
if result < 0:
print('no')
else:
print('yes')
``` | instruction | 0 | 42,087 | 18 | 84,174 |
No | output | 1 | 42,087 | 18 | 84,175 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes
Submitted Solution:
```
# -*- coding: utf-8 -*-
class HashTable(list):
def __init__(self, length):
list.__init__(self)
self.length = length
self[:] = [None] * length
def h1(self, key):
return key % self.length
def h2(self, key):
return 1 + (key % (self.length - 1))
def h(self, key, i):
return (self.h1(key) + i*self.h2(key)) % self.length
def insert(self, key):
i = 0
while True:
j = self.h(key, i)
if self[j] is None:
self[j] = key
return j
else:
i += 1
def search(self, key):
i = 0
while True:
j = self.h(key, i)
if self[j] == key:
return j
elif self[j] is None or i >= self.length:
return None
else:
i += 1
def getNum(char):
char2num = str.maketrans("ACGT", "1234")
return int(char.translate(char2num))
if __name__ == '__main__':
n = int(input())
T = HashTable(n*10)
C = [input().split(" ") for i in range(n)]
C = map(lambda x:(x[0], getNum(x[1])), C)
for command, num in C:
if command == "insert":
T.insert(num)
else:
if T.search(num) is None:
print("no")
else:
print("yes")
``` | instruction | 0 | 42,088 | 18 | 84,176 |
No | output | 1 | 42,088 | 18 | 84,177 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes
Submitted Solution:
```
M = 15140366
def h1(key):
return key % M
def h2(key):
return 1 + (key %(M-1))
def h3(key, i):
return (h1(key) + i*h2(key)) % M
word_dic = {'A': 1, 'T': 2, 'G': 3, 'C': 4}
def getkey(text):
sum = 0
p = 1
for c in text:
sum += p*word_dic[c]
p *= 5
return sum
dict = {}
def find(text):
global dict
key = getkey(text)
i = 0
while i < M:
h = h3(key, i)
if dict.get(h) == None:
break
elif dict[h] == text:
return True
i += 1
return False
def insert(text):
global dict
key = getkey(text)
i = 0
while i < M:
j = h3(key, i)
if dict.get(j) == None:
dict[j] = text
break
else:
i += 1
n = int(input())
for i in range(n):
op, text = input().split(' ')
if op == 'insert':
insert(text)
elif op == 'find':
rst = find(text)
if rst:
print('yes')
else:
print('no')
``` | instruction | 0 | 42,089 | 18 | 84,178 |
No | output | 1 | 42,089 | 18 | 84,179 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Your task is to write a program of a simple dictionary which implements the following instructions:
* insert str: insert a string str in to the dictionary
* find str: if the distionary contains str, then print 'yes', otherwise print 'no'
Notes
Template in C
Constraints
* A string consists of 'A', 'C', 'G', or 'T'
* 1 ≤ length of a string ≤ 12
* n ≤ 1000000
Input
In the first line n, the number of instructions is given. In the following n lines, n instructions are given in the above mentioned format.
Output
Print yes or no for each find instruction in a line.
Examples
Input
5
insert A
insert T
insert C
find G
find A
Output
no
yes
Input
13
insert AAA
insert AAC
insert AGA
insert AGG
insert TTT
find AAA
find CCC
find CCC
insert CCC
find CCC
insert T
find TTT
find T
Output
yes
no
no
yes
yes
yes
Submitted Solution:
```
dic = []
for i in range(int(input())):
cmd, arg = input().split()
if cmd == "insert":
dic.append(arg)
else:
if arg in dic:
print("yes")
else:
print("no")
``` | instruction | 0 | 42,090 | 18 | 84,180 |
No | output | 1 | 42,090 | 18 | 84,181 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a mysterious language (codenamed "Secret") available in "Custom Invocation" tab. Figure out what this language is and write a program which prints its name. Note that the program must be written in this language.
Input
This program has only one test (your program doesn't have to read anything).
Output
Output the name of the mysterious language. Note that the name is case-sensitive and might contain digits and special characters.
Examples
Note
Some scientists disagree on what should be considered as a language and what should be considered as a dialect.
Submitted Solution:
```
#Fun....
print('INTERCAL')
``` | instruction | 0 | 43,333 | 18 | 86,666 |
Yes | output | 1 | 43,333 | 18 | 86,667 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a mysterious language (codenamed "Secret") available in "Custom Invocation" tab. Figure out what this language is and write a program which prints its name. Note that the program must be written in this language.
Input
This program has only one test (your program doesn't have to read anything).
Output
Output the name of the mysterious language. Note that the name is case-sensitive and might contain digits and special characters.
Examples
Note
Some scientists disagree on what should be considered as a language and what should be considered as a dialect.
Submitted Solution:
```
print("Secret")
#############################################################
``` | instruction | 0 | 43,334 | 18 | 86,668 |
No | output | 1 | 43,334 | 18 | 86,669 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a mysterious language (codenamed "Secret") available in "Custom Invocation" tab. Figure out what this language is and write a program which prints its name. Note that the program must be written in this language.
Input
This program has only one test (your program doesn't have to read anything).
Output
Output the name of the mysterious language. Note that the name is case-sensitive and might contain digits and special characters.
Examples
Note
Some scientists disagree on what should be considered as a language and what should be considered as a dialect.
Submitted Solution:
```
print("Python")
``` | instruction | 0 | 43,335 | 18 | 86,670 |
No | output | 1 | 43,335 | 18 | 86,671 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a mysterious language (codenamed "Secret") available in "Custom Invocation" tab. Figure out what this language is and write a program which prints its name. Note that the program must be written in this language.
Input
This program has only one test (your program doesn't have to read anything).
Output
Output the name of the mysterious language. Note that the name is case-sensitive and might contain digits and special characters.
Examples
Note
Some scientists disagree on what should be considered as a language and what should be considered as a dialect.
Submitted Solution:
```
print("ICL017I")
``` | instruction | 0 | 43,336 | 18 | 86,672 |
No | output | 1 | 43,336 | 18 | 86,673 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a mysterious language (codenamed "Secret") available in "Custom Invocation" tab. Figure out what this language is and write a program which prints its name. Note that the program must be written in this language.
Input
This program has only one test (your program doesn't have to read anything).
Output
Output the name of the mysterious language. Note that the name is case-sensitive and might contain digits and special characters.
Examples
Note
Some scientists disagree on what should be considered as a language and what should be considered as a dialect.
Submitted Solution:
```
print('Python 3.6')
``` | instruction | 0 | 43,337 | 18 | 86,674 |
No | output | 1 | 43,337 | 18 | 86,675 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have a string S of length N. Initially, all characters in S are `1`s.
You will perform queries Q times. In the i-th query, you are given two integers L_i, R_i and a character D_i (which is a digit). Then, you must replace all characters from the L_i-th to the R_i-th (inclusive) with D_i.
After each query, read the string S as a decimal integer, and print its value modulo 998,244,353.
Constraints
* 1 \leq N, Q \leq 200,000
* 1 \leq L_i \leq R_i \leq N
* 1 \leq D_i \leq 9
* All values in input are integers.
Input
Input is given from Standard Input in the following format:
N Q
L_1 R_1 D_1
:
L_Q R_Q D_Q
Output
Print Q lines. In the i-th line print the value of S after the i-th query, modulo 998,244,353.
Examples
Input
8 5
3 6 2
1 4 7
3 8 3
2 2 2
4 5 1
Output
11222211
77772211
77333333
72333333
72311333
Input
200000 1
123 456 7
Output
641437905
Submitted Solution:
```
import sys
sys.setrecursionlimit(10**7)
def MI(): return map(int,sys.stdin.readline().rstrip().split())
N,Q = MI()
mod = 998244353
power = [1] # power[i] = 10**i
for i in range(N):
power.append((power[-1]*10) % mod)
t = pow(9,mod-2,mod) # 9 の逆数
class LazySegTree(): # モノイドに対して適用可能、Nが2冪でなくても良い
def __init__(self,N,X_func,A_func,operate,X_unit,A_unit):
self.N = N
self.X_func = X_func
self.A_func = A_func
self.operate = operate
self.X_unit = X_unit
self.A_unit = A_unit
self.X = [self.X_unit]*(2*self.N)
self.A = [self.A_unit]*(2*self.N)
self.size = [0]*(2*self.N)
def build(self,init_value): # 初期値を[N,2N)に格納
for i in range(self.N):
self.X[self.N+i] = init_value[i]
self.size[self.N+i] = 1
for i in range(self.N-1,0,-1):
self.X[i] = self.X_func(self.X[i << 1],self.X[i << 1 | 1])
self.size[i] = self.size[i << 1] + self.size[i << 1 | 1]
def update(self,i,x): # i番目(0-index)の値をxに変更
i += self.N
self.X[i] = x
i >>= 1
while i:
self.X[i] = self.X_func(self.X[i << 1],self.X[i << 1 | 1])
i >>= 1
def eval_at(self,i): # i番目で作用を施した値を返す
return self.operate(self.X[i],self.A[i],self.size[i])
def eval_above(self,i): # i番目より上の値を再計算する
i >>= 1
while i:
self.X[i] = self.X_func(self.eval_at(i << 1),self.eval_at(i << 1 | 1))
i >>= 1
def propagate_at(self,i): # i番目で作用を施し、1つ下に作用の情報を伝える
self.X[i] = self.operate(self.X[i],self.A[i],self.size[i])
self.A[i << 1] = self.A_func(self.A[i << 1],self.A[i])
self.A[i << 1 | 1] = self.A_func(self.A[i << 1 | 1], self.A[i])
self.A[i] = self.A_unit
def propagate_above(self,i): # i番目より上で作用を施す
H = i.bit_length()
for h in range(H,0,-1):
self.propagate_at(i >> h)
def fold(self,L,R): # [L,R)の区間取得
L += self.N
R += self.N
L0 = L // (L & -L)
R0 = R // (R & -R) - 1
self.propagate_above(L0)
self.propagate_above(R0)
vL = self.X_unit
vR = self.X_unit
while L < R:
if L & 1:
vL = self.X_func(vL,self.eval_at(L))
L += 1
if R & 1:
R -= 1
vR = self.X_func(self.eval_at(R),vR)
L >>= 1
R >>= 1
return self.X_func(vL,vR)
def operate_range(self,L,R,x): # [L,R)にxを作用
L += self.N
R += self.N
L0 = L // (L & -L)
R0 = R // (R & -R) - 1
self.propagate_above(L0)
self.propagate_above(R0)
while L < R:
if L & 1:
self.A[L] = self.A_func(self.A[L],x)
L += 1
if R & 1:
R -= 1
self.A[R] = self.A_func(self.A[R],x)
L >>= 1
R >>= 1
self.eval_above(L0)
self.eval_above(R0)
def X_func(x,y):
x1,x2 = x
y1,y2 = y
return ((x1*power[y2]+y1) % mod,x2+y2)
def A_func(a,b):
if b == 0:
return a
return b
def operate(x,a,r): # 右作用
if a == 0:
return x
x1,x2 = x
return ((a*(power[x2]-1)*t) % mod,x2)
LST = LazySegTree(N,X_func,A_func,operate,(0,0),0)
LST.build([(1,1)]*N)
for _ in range(Q):
l,r,d = MI()
LST.operate_range(l-1,r,d)
print(LST.fold(0,N)[0])
``` | instruction | 0 | 43,553 | 18 | 87,106 |
Yes | output | 1 | 43,553 | 18 | 87,107 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have a string S of length N. Initially, all characters in S are `1`s.
You will perform queries Q times. In the i-th query, you are given two integers L_i, R_i and a character D_i (which is a digit). Then, you must replace all characters from the L_i-th to the R_i-th (inclusive) with D_i.
After each query, read the string S as a decimal integer, and print its value modulo 998,244,353.
Constraints
* 1 \leq N, Q \leq 200,000
* 1 \leq L_i \leq R_i \leq N
* 1 \leq D_i \leq 9
* All values in input are integers.
Input
Input is given from Standard Input in the following format:
N Q
L_1 R_1 D_1
:
L_Q R_Q D_Q
Output
Print Q lines. In the i-th line print the value of S after the i-th query, modulo 998,244,353.
Examples
Input
8 5
3 6 2
1 4 7
3 8 3
2 2 2
4 5 1
Output
11222211
77772211
77333333
72333333
72311333
Input
200000 1
123 456 7
Output
641437905
Submitted Solution:
```
import sys
sys.setrecursionlimit(10**7)
mod = 998244353
INF = float("inf")
class lazySegTree(object):
def __init__(self, N):
self.N = N
self.LV = (N-1).bit_length()
self.N0 = 2**self.LV
self.data = [0]*(2*self.N0) #桁の値を管理(lazy*size)
self.lazy = [0]*(2*self.N0) #桁の文字を管理
self.size = [1]*(2*self.N0) #桁の和を管理(10^n)(更新しない)
for i in range(self.N):
self.size[self.N0-1+i] = pow(10, self.N-i-1, mod)
for i in range(self.N0-2, -1, -1):
self.size[i] = (self.size[2*i+1] + self.size[2*i+2])%mod
# 遅延セグ木の初期化
def initialize(self):
for i in range(self.N):
self.data[self.N0-1+i] = pow(10, self.N-i-1, mod)
for i in range(self.N0-2, -1, -1):
self.data[i] = (self.data[2*i+1] + self.data[2*i+2])%mod
# 遅延伝播を行うindexを生成
def gindex(self, l, r):
L = l + self.N0
L >>= 1
R = r + self.N0
R >>= 1
if l & 1:
lc = 0
else:
lc = (L & -L).bit_length()
if r & 1:
rc = 0
else:
rc = (R & -R).bit_length()
for i in range(self.LV):
if rc <= i:
yield R
if L < R and lc <= i:
yield L
L >>= 1
R >>= 1
# 遅延伝搬処理
def propagates(self, *ids):
for i in reversed(ids):
v = self.lazy[i - 1]
if not v:
continue
self.lazy[2*i-1] = v
self.lazy[2*i] = v
self.data[2*i-1] = v * self.size[2*i-1]
self.data[2*i] = v * self.size[2*i]
self.lazy[i-1] = 0
def update(self, l, r, x):
*ids, = self.gindex(l, r+1)
self.propagates(*ids)
L = self.N0 + l
R = self.N0 + r + 1
while L < R:
if R & 1:
R -= 1
self.lazy[R-1] = x #桁の文字を更新
self.data[R-1] = x * self.size[R-1] #桁の値を更新
if L & 1:
self.lazy[L-1] = x
self.data[L-1] = x * self.size[L-1]
L += 1
L >>= 1
R >>= 1
for i in ids:
self.data[i-1] = (self.data[2*i-1] + self.data[2*i])%mod
# 区間[l, r]内のdataの和を求める
def query(self, l, r):
self.propagates(*self.gindex(l, r+1))
L = self.N0 + l
R = self.N0 + r + 1
s = 0
while L < R:
if R & 1:
R -= 1
s = (s + self.data[R-1])%mod
if L & 1:
s = (s + self.data[L-1])%mod
L += 1
L >>= 1
R >>= 1
s %= mod
return s
N, Q = map(int, input().split())
lSeg = lazySegTree(N)
lSeg.initialize()
for i in range(Q):
L, R, D = map(int, input().split())
L -= 1
R -= 1
lSeg.update(L, R, D)
ans = lSeg.query(0, N-1)
print(ans)
``` | instruction | 0 | 43,556 | 18 | 87,112 |
No | output | 1 | 43,556 | 18 | 87,113 |
Provide a correct Python 3 solution for this coding contest problem.
Find the edit distance between given two words s1 and s2.
The disntace is the minimum number of single-character edits required to change one word into the other. The edits including the following operations:
* insertion: Insert a character at a particular position.
* deletion: Delete a character at a particular position.
* substitution: Change the character at a particular position to a different character
Constraints
* 1 ≤ length of s1 ≤ 1000
* 1 ≤ length of s2 ≤ 1000
Input
s1
s2
Two words s1 and s2 are given in the first line and the second line respectively. The words will consist of lower case characters.
Output
Print the edit distance in a line.
Examples
Input
acac
acm
Output
2
Input
icpc
icpc
Output
0 | instruction | 0 | 43,783 | 18 | 87,566 |
"Correct Solution:
```
S = ' ' + input()
T = ' ' + input()
dp = [[i+j for j in range(len(T)+1)] for i in range(len(S)+1)]
for i in range(len(S)):
for j in range(len(T)):
c = 0 if S[i] == T[j] else 1
dp[i+1][j+1] = min(dp[i][j] + c, dp[i][j+1] + 1, dp[i+1][j] + 1)
print(dp[len(S)][len(T)])
``` | output | 1 | 43,783 | 18 | 87,567 |
Provide a correct Python 3 solution for this coding contest problem.
Find the edit distance between given two words s1 and s2.
The disntace is the minimum number of single-character edits required to change one word into the other. The edits including the following operations:
* insertion: Insert a character at a particular position.
* deletion: Delete a character at a particular position.
* substitution: Change the character at a particular position to a different character
Constraints
* 1 ≤ length of s1 ≤ 1000
* 1 ≤ length of s2 ≤ 1000
Input
s1
s2
Two words s1 and s2 are given in the first line and the second line respectively. The words will consist of lower case characters.
Output
Print the edit distance in a line.
Examples
Input
acac
acm
Output
2
Input
icpc
icpc
Output
0 | instruction | 0 | 43,784 | 18 | 87,568 |
"Correct Solution:
```
s = input()
t = input()
w = len(s)+1
h = len(t)+1
dp = []
for i in range(h):
L = [0]*w
dp.append(L)
for i in range(w):
dp[0][i] = i
for i in range(h):
dp[i][0] = i
for i in range(h-1):
for j in range(w-1):
if t[i] == s[j]:
dp[i+1][j+1] = min(dp[i][j],dp[i][j+1]+1,dp[i+1][j]+1)
else:
dp[i+1][j+1] = min(dp[i][j]+1,dp[i][j+1]+1,dp[i+1][j]+1)
print(dp[h-1][w-1])
``` | output | 1 | 43,784 | 18 | 87,569 |
Provide a correct Python 3 solution for this coding contest problem.
Find the edit distance between given two words s1 and s2.
The disntace is the minimum number of single-character edits required to change one word into the other. The edits including the following operations:
* insertion: Insert a character at a particular position.
* deletion: Delete a character at a particular position.
* substitution: Change the character at a particular position to a different character
Constraints
* 1 ≤ length of s1 ≤ 1000
* 1 ≤ length of s2 ≤ 1000
Input
s1
s2
Two words s1 and s2 are given in the first line and the second line respectively. The words will consist of lower case characters.
Output
Print the edit distance in a line.
Examples
Input
acac
acm
Output
2
Input
icpc
icpc
Output
0 | instruction | 0 | 43,785 | 18 | 87,570 |
"Correct Solution:
```
# Levenshtein Distance algorithm
def levenshtein(s1, s2):
prev = range(len(s1) + 1)
for i, c2 in enumerate(s2, start=1):
cur = [i] + [0] * len(s1)
for j, tpl in enumerate(zip(s1, prev[1:], cur, prev), start=1):
c1, p1, p2, p3 = tpl
cur[j] = min(p1 + 1, p2 + 1, p3 + (c2 != c1))
prev = cur
return cur[len(s1)]
# solve
s1 = input()
s2 = input()
ans = levenshtein(s1, s2)
print(ans)
``` | output | 1 | 43,785 | 18 | 87,571 |
Provide a correct Python 3 solution for this coding contest problem.
Find the edit distance between given two words s1 and s2.
The disntace is the minimum number of single-character edits required to change one word into the other. The edits including the following operations:
* insertion: Insert a character at a particular position.
* deletion: Delete a character at a particular position.
* substitution: Change the character at a particular position to a different character
Constraints
* 1 ≤ length of s1 ≤ 1000
* 1 ≤ length of s2 ≤ 1000
Input
s1
s2
Two words s1 and s2 are given in the first line and the second line respectively. The words will consist of lower case characters.
Output
Print the edit distance in a line.
Examples
Input
acac
acm
Output
2
Input
icpc
icpc
Output
0 | instruction | 0 | 43,786 | 18 | 87,572 |
"Correct Solution:
```
INF = 10 ** 10
s1,s2 = input(),input()
n,m = len(s1),len(s2)
dp = [[INF] * (m + 1) for i in range(n + 1)]
dp[0][0] = 0
for i in range(n + 1):
for j in range(m + 1):
if i >= 1:
dp[i][j] = min(dp[i][j],dp[i - 1][j] + 1)
if j >= 1:
dp[i][j] = min(dp[i][j],dp[i][j - 1] + 1)
if i >= 1 and j >= 1:
dp[i][j] = min(dp[i][j],dp[i - 1][j - 1] + (s1[i - 1] != s2[j - 1]))
print(dp[n][m])
``` | output | 1 | 43,786 | 18 | 87,573 |
Provide a correct Python 3 solution for this coding contest problem.
Find the edit distance between given two words s1 and s2.
The disntace is the minimum number of single-character edits required to change one word into the other. The edits including the following operations:
* insertion: Insert a character at a particular position.
* deletion: Delete a character at a particular position.
* substitution: Change the character at a particular position to a different character
Constraints
* 1 ≤ length of s1 ≤ 1000
* 1 ≤ length of s2 ≤ 1000
Input
s1
s2
Two words s1 and s2 are given in the first line and the second line respectively. The words will consist of lower case characters.
Output
Print the edit distance in a line.
Examples
Input
acac
acm
Output
2
Input
icpc
icpc
Output
0 | instruction | 0 | 43,787 | 18 | 87,574 |
"Correct Solution:
```
import sys
def levenshtein_dist(s1: str, s2: str) -> int:
m = len(s1)
n = len(s2)
table = [[sys.maxsize for j in range(n + 1)] for i in range(m + 1)]
for i in range(m + 1):
table[i][0] = i
for j in range(n + 1):
table[0][j] = j
for i in range(1, m + 1):
for j in range(1, n + 1):
table[i][j] = min(table[i - 1][j] + 1,
table[i][j - 1] + 1,
table[i - 1][j - 1] + (s1[i - 1] != s2[j - 1]))
return table[m][n]
if __name__ == "__main__":
s1: str = input()
s2: str = input()
print(f"{levenshtein_dist(s1, s2)}")
``` | output | 1 | 43,787 | 18 | 87,575 |
Provide a correct Python 3 solution for this coding contest problem.
Find the edit distance between given two words s1 and s2.
The disntace is the minimum number of single-character edits required to change one word into the other. The edits including the following operations:
* insertion: Insert a character at a particular position.
* deletion: Delete a character at a particular position.
* substitution: Change the character at a particular position to a different character
Constraints
* 1 ≤ length of s1 ≤ 1000
* 1 ≤ length of s2 ≤ 1000
Input
s1
s2
Two words s1 and s2 are given in the first line and the second line respectively. The words will consist of lower case characters.
Output
Print the edit distance in a line.
Examples
Input
acac
acm
Output
2
Input
icpc
icpc
Output
0 | instruction | 0 | 43,788 | 18 | 87,576 |
"Correct Solution:
```
s1 = input()
s2 = input()
l1 = len(s1)
l2 = len(s2)
INF = l1 + l2
def match(i, j):
if s2[i - 1] == s1[j - 1]:
return 0
else:
return 1
ans = [[INF] * (1 + l1) for _ in range(1 + l2)]
# 初期化：dp[0][i] = i
ans[0][0] = 0
# ans[i][j]:= s1のi文字目、s2のj文字目を一致させた時のmin編集距離
# ans[i][j] = min(ans[i-1][j],ans[i][j-1],match+ans[i-1][j-1])
for i in range(l2 + 1):
for j in range(l1 + 1):
if i == 0:
ans[i][j] = j
elif j == 0:
ans[i][j] = i
else:
ans[i][j] = min(
ans[i - 1][j] + 1, ans[i][j - 1] + 1, match(i, j) + ans[i - 1][j - 1]
)
print(ans[l2][l1])
#print(ans)
``` | output | 1 | 43,788 | 18 | 87,577 |
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