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Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Dr. Moriarty is about to send a message to Sherlock Holmes. He has a string s. String p is called a substring of string s if you can read it starting from some position in the string s. For ex...
instruction
0
98,140
0
196,280
No
output
1
98,140
0
196,281
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Dr. Moriarty is about to send a message to Sherlock Holmes. He has a string s. String p is called a substring of string s if you can read it starting from some position in the string s. For ex...
instruction
0
98,141
0
196,282
No
output
1
98,141
0
196,283
Provide tags and a correct Python 3 solution for this coding contest problem. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The algorithm consists of two steps: 1. Find any...
instruction
0
98,187
0
196,374
Tags: data structures, implementation Correct Solution: ``` from sys import stdin, stdout def readIn(): return ( map(int,input().split()) ) s = input() sz = len(s)+1 cnt = [ [0]*3 for _ in range(sz) ] for i in range(sz-1): for j in range(3): cnt[i+1][j] = cnt[i][j] if s[i] == 'x': cnt[i+1]...
output
1
98,187
0
196,375
Provide tags and a correct Python 3 solution for this coding contest problem. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The algorithm consists of two steps: 1. Find any...
instruction
0
98,188
0
196,376
Tags: data structures, implementation Correct Solution: ``` #!/usr/bin/python3 def readln(): return tuple(map(int, input().split())) q = input() cnt = [[0] * 3 for _ in range(len(q) + 1)] for i, v in enumerate(list(q)): for j in range(3): cnt[i + 1][j] = cnt[i][j] if v == 'x': cnt[i + 1][0] +=...
output
1
98,188
0
196,377
Provide tags and a correct Python 3 solution for this coding contest problem. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The algorithm consists of two steps: 1. Find any...
instruction
0
98,189
0
196,378
Tags: data structures, implementation Correct Solution: ``` import sys # sys.stdin = open('input.txt', 'r') # sys.stdout = open('output.txt', 'w') input = sys.stdin.readline s = input().strip() x_c, y_c, z_c = [0], [0], [0] for el in s: x_c.append(x_c[-1]+int(el=="x")) y_c.append(y_c[-1]+int(el=="y")) ...
output
1
98,189
0
196,379
Provide tags and a correct Python 3 solution for this coding contest problem. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The algorithm consists of two steps: 1. Find any...
instruction
0
98,190
0
196,380
Tags: data structures, implementation Correct Solution: ``` def f(t): return t[2] - t[0] > 1 t = input() n, m, p = len(t), int(input()), {'x': 0, 'y': 1, 'z': 2} s = [[0] * (n + 1) for i in range(3)] for i, c in enumerate(t, 1): s[p[c]][i] = 1 for i in range(3): for j in range(1, n): s[i][j + 1] += s[i][j] a...
output
1
98,190
0
196,381
Provide tags and a correct Python 3 solution for this coding contest problem. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The algorithm consists of two steps: 1. Find any...
instruction
0
98,191
0
196,382
Tags: data structures, implementation Correct Solution: ``` import sys # sys.stdin = open('input.txt', 'r') # sys.stdout = open('output.txt', 'w') input = sys.stdin.readline s = input().strip() x_c, y_c, z_c = [0], [0], [0] for el in s: x_c.append(x_c[-1]+int(el=="x")) y_c.append(y_c[-1]+int(el=="y")) ...
output
1
98,191
0
196,383
Provide tags and a correct Python 3 solution for this coding contest problem. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The algorithm consists of two steps: 1. Find any...
instruction
0
98,192
0
196,384
Tags: data structures, implementation Correct Solution: ``` import sys input=sys.stdin.readline s=input().strip() xc=yc=zc=0 xlis,ylis,zlis=[0],[0],[0] for i in s: xlis.append(xlis[-1]+int(i=='x')) ylis.append(ylis[-1]+int(i=='y')) zlis.append(zlis[-1]+int(i=='z')) for __ in range(int(input())): l,r=ma...
output
1
98,192
0
196,385
Provide tags and a correct Python 3 solution for this coding contest problem. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The algorithm consists of two steps: 1. Find any...
instruction
0
98,193
0
196,386
Tags: data structures, implementation Correct Solution: ``` def sum_chr(ch): tem, cur = [0], 0 for i in range(len(s)): if s[i] == ch: cur += 1 tem.append(cur) return tem s, m = input(), int(input()) xs, ys, zs, ans = sum_chr('x'), sum_chr('y'), sum_chr('z'), [] for i in range(...
output
1
98,193
0
196,387
Provide tags and a correct Python 3 solution for this coding contest problem. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The algorithm consists of two steps: 1. Find any...
instruction
0
98,194
0
196,388
Tags: data structures, implementation Correct Solution: ``` def f(x, y, z): return abs(y - x) > 1 or abs(z - x) > 1 or abs(y - z) > 1 t = input() n, p = len(t), {'x': 0, 'y': 1, 'z': 2} s = [[0] * (n + 1) for i in range(3)] for i, c in enumerate(t, 1): s[p[c]][i] = 1 for i in range(3): for j in range(1, n): s[i][j ...
output
1
98,194
0
196,389
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The ...
instruction
0
98,195
0
196,390
Yes
output
1
98,195
0
196,391
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The ...
instruction
0
98,196
0
196,392
Yes
output
1
98,196
0
196,393
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The ...
instruction
0
98,197
0
196,394
Yes
output
1
98,197
0
196,395
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The ...
instruction
0
98,198
0
196,396
Yes
output
1
98,198
0
196,397
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The ...
instruction
0
98,199
0
196,398
No
output
1
98,199
0
196,399
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The ...
instruction
0
98,200
0
196,400
No
output
1
98,200
0
196,401
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The ...
instruction
0
98,201
0
196,402
No
output
1
98,201
0
196,403
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Sereja loves all sorts of algorithms. He has recently come up with a new algorithm, which receives a string as an input. Let's represent the input string of the algorithm as q = q1q2... qk. The ...
instruction
0
98,202
0
196,404
No
output
1
98,202
0
196,405
Provide tags and a correct Python 3 solution for this coding contest problem. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevin's score on one of the n questions of the olym...
instruction
0
98,244
0
196,488
Tags: dp, greedy, math Correct Solution: ``` from collections import Counter _ = input() s = input().strip() sequences = Counter() cur_seq_len = 1 for p, n in zip(s, s[1:] + '*'): if p == n: cur_seq_len += 1 else: if cur_seq_len > 3: cur_seq_len = 3 sequences[cur_seq_len] ...
output
1
98,244
0
196,489
Provide tags and a correct Python 3 solution for this coding contest problem. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevin's score on one of the n questions of the olym...
instruction
0
98,245
0
196,490
Tags: dp, greedy, math Correct Solution: ``` if __name__ == "__main__": n = int( input().strip() ) s = input().strip() segs = [] start = 0 i = 1 while i <= n: if i == n or s[i] != s[start]: segs.append( i - start ) start = i i = start + 1 el...
output
1
98,245
0
196,491
Provide tags and a correct Python 3 solution for this coding contest problem. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevin's score on one of the n questions of the olym...
instruction
0
98,246
0
196,492
Tags: dp, greedy, math Correct Solution: ``` n = int(input()) s = input() dl = 1 now = s[0] k = 0 for i in range(1, n): if now != s[i]: now = s[i] dl += 1 for i in range(n - 1): if s[i] == s[i + 1] == '0' or s[i] == s[i + 1] == '1': k += 1 if k >= 2: print(dl + 2) elif k == ...
output
1
98,246
0
196,493
Provide tags and a correct Python 3 solution for this coding contest problem. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevin's score on one of the n questions of the olym...
instruction
0
98,247
0
196,494
Tags: dp, greedy, math Correct Solution: ``` n = map(int, input()) s = input() l = [] cnt = 1 for i in range( 1, len(s)): if s[i] != s[i-1]: l.append(cnt) cnt = 1 else: cnt += 1 l.append(cnt) result = len(l) add = 0 if max(l) >= 3: add = 2 elif max(l) >= 2: add = 1 if len(l) > 1: for i in range( 1, len(l))...
output
1
98,247
0
196,495
Provide tags and a correct Python 3 solution for this coding contest problem. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevin's score on one of the n questions of the olym...
instruction
0
98,248
0
196,496
Tags: dp, greedy, math Correct Solution: ``` n=int(input()) s=input() print(min(s.count('01')+s.count('10')+3,n)) ```
output
1
98,248
0
196,497
Provide tags and a correct Python 3 solution for this coding contest problem. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevin's score on one of the n questions of the olym...
instruction
0
98,249
0
196,498
Tags: dp, greedy, math Correct Solution: ``` n=int(input()) s=input() c=1 seg=[] for i in range(1,n): if s[i]==s[i-1]: c+=1 else: seg.append(c) c=1 seg.append(c) f=0 for i in range(len(seg)): if seg[i]>=3: f=max(f,2) if seg[0]==1 and seg[len(seg)-1]==2 or seg[0]==2 and seg[le...
output
1
98,249
0
196,499
Provide tags and a correct Python 3 solution for this coding contest problem. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevin's score on one of the n questions of the olym...
instruction
0
98,250
0
196,500
Tags: dp, greedy, math Correct Solution: ``` n=int(input()) s=input().strip('\n') cur=s[0] l=1 for i in range(1,n): if s[i]!=cur: l+=1 cur=s[i] print(min(l+2,n)) ```
output
1
98,250
0
196,501
Provide tags and a correct Python 3 solution for this coding contest problem. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevin's score on one of the n questions of the olym...
instruction
0
98,251
0
196,502
Tags: dp, greedy, math Correct Solution: ``` n=int(input()) s=input() k=0 i=0 r=int(s[0]) while(i<n): if(int(s[i])==r): r=1-r k+=1 i+=1 print(min(k+2,n)) ```
output
1
98,251
0
196,503
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevi...
instruction
0
98,252
0
196,504
Yes
output
1
98,252
0
196,505
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevi...
instruction
0
98,253
0
196,506
Yes
output
1
98,253
0
196,507
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevi...
instruction
0
98,254
0
196,508
Yes
output
1
98,254
0
196,509
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevi...
instruction
0
98,255
0
196,510
Yes
output
1
98,255
0
196,511
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevi...
instruction
0
98,256
0
196,512
No
output
1
98,256
0
196,513
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevi...
instruction
0
98,257
0
196,514
No
output
1
98,257
0
196,515
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevi...
instruction
0
98,258
0
196,516
No
output
1
98,258
0
196,517
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Kevin has just recevied his disappointing results on the USA Identification of Cows Olympiad (USAICO) in the form of a binary string of length n. Each character of Kevin's string represents Kevi...
instruction
0
98,259
0
196,518
No
output
1
98,259
0
196,519
Provide tags and a correct Python 3 solution for this coding contest problem. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the strings "abb" and "iq" are not. A substring s...
instruction
0
98,367
0
196,734
Tags: brute force, implementation, strings Correct Solution: ``` s=input() res = 0 l = len(s) for i in range(l): for j in range(i + 1, l+1): t = s[i:j] tt = t[::-1] if t != tt: res = max(res, j - i) print(res) ```
output
1
98,367
0
196,735
Provide tags and a correct Python 3 solution for this coding contest problem. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the strings "abb" and "iq" are not. A substring s...
instruction
0
98,368
0
196,736
Tags: brute force, implementation, strings Correct Solution: ``` ### @author egaeus ### @mail jsbeltran.valhalla@gmail.com ### @veredict ### @url https://codeforces.com/problemset/problem/981/A ### @category strings ### @date 02/12/2019 s = input() res = 0 for i in range(len(s)): for j in range(i+1, len(...
output
1
98,368
0
196,737
Provide tags and a correct Python 3 solution for this coding contest problem. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the strings "abb" and "iq" are not. A substring s...
instruction
0
98,369
0
196,738
Tags: brute force, implementation, strings Correct Solution: ``` n = input() s = {x for x in n} r = n[::-1] print(0) if len(s) == 1 else print(len(n)-1) if r == n else print(len(n)) ```
output
1
98,369
0
196,739
Provide tags and a correct Python 3 solution for this coding contest problem. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the strings "abb" and "iq" are not. A substring s...
instruction
0
98,370
0
196,740
Tags: brute force, implementation, strings Correct Solution: ``` def reverse(str): new_str = '' for i in range(len(str)-1, -1, -1): new_str += str[i] return new_str def is_palindrome(str): return str == reverse(str) s = input() if is_palindrome(s): if is_palindrome(s[:len(s)-1]): ...
output
1
98,370
0
196,741
Provide tags and a correct Python 3 solution for this coding contest problem. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the strings "abb" and "iq" are not. A substring s...
instruction
0
98,371
0
196,742
Tags: brute force, implementation, strings Correct Solution: ``` s = input() if len(set(s))==1: print(0) elif s==s[::-1]: print(len(s)-1) else: print(len(s)) ```
output
1
98,371
0
196,743
Provide tags and a correct Python 3 solution for this coding contest problem. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the strings "abb" and "iq" are not. A substring s...
instruction
0
98,372
0
196,744
Tags: brute force, implementation, strings Correct Solution: ``` s = input() t = s[::-1] if s == t: if len(set(s)) == 1: print("0") else: print(len(s)-1) else: print(len(s)) ```
output
1
98,372
0
196,745
Provide tags and a correct Python 3 solution for this coding contest problem. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the strings "abb" and "iq" are not. A substring s...
instruction
0
98,373
0
196,746
Tags: brute force, implementation, strings Correct Solution: ``` def is_palindrome(word): return word == word[::-1] word = input() sem_palindromo = True for i in range(len(word)): temp = word[i:] temp2 = word[:len(word)-i] temp3 = word[i:len(word)-i] if not is_palindrome(temp): print(len(t...
output
1
98,373
0
196,747
Provide tags and a correct Python 3 solution for this coding contest problem. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the strings "abb" and "iq" are not. A substring s...
instruction
0
98,374
0
196,748
Tags: brute force, implementation, strings Correct Solution: ``` import sys import math import bisect import itertools import random def main(): s = input() if len(set(list(s))) == 1: print(0) elif s == s[::-1]: print(len(s)-1) else: print(len(s)) if __name__ == "__main__": ...
output
1
98,374
0
196,749
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the...
instruction
0
98,375
0
196,750
Yes
output
1
98,375
0
196,751
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the...
instruction
0
98,376
0
196,752
Yes
output
1
98,376
0
196,753
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the...
instruction
0
98,377
0
196,754
Yes
output
1
98,377
0
196,755
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the...
instruction
0
98,378
0
196,756
Yes
output
1
98,378
0
196,757
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the...
instruction
0
98,379
0
196,758
No
output
1
98,379
0
196,759
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the...
instruction
0
98,380
0
196,760
No
output
1
98,380
0
196,761
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the...
instruction
0
98,381
0
196,762
No
output
1
98,381
0
196,763
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A string is a palindrome if it reads the same from the left to the right and from the right to the left. For example, the strings "kek", "abacaba", "r" and "papicipap" are palindromes, while the...
instruction
0
98,382
0
196,764
No
output
1
98,382
0
196,765