message
stringlengths
2
23.8k
message_type
stringclasses
2 values
message_id
int64
0
1
conversation_id
int64
97
109k
cluster
float64
0
0
__index_level_0__
int64
194
217k
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a string s of length n, which consists only of the first k letters of the Latin alphabet. All letters in string s are uppercase. A subsequence of string s is a string that can be derived from s by deleting some of its symbols ...
instruction
0
20,286
0
40,572
Tags: implementation, strings Correct Solution: ``` n, k = list(map(int, input().split())) s = input() alpha = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' a = dict([(lit, 0) for lit in alpha[:k]]) for i in range(n): a[s[i]] += 1 min_cnt = min(a.values()) print(min_cnt*k) ```
output
1
20,286
0
40,573
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a string s of length n, which consists only of the first k letters of the Latin alphabet. All letters in string s are uppercase. A subsequence of string s is a string that can be derived from s by deleting some of its symbols ...
instruction
0
20,287
0
40,574
Tags: implementation, strings Correct Solution: ``` #import sys #sys.stdin = open("input.in","r") #sys.stdout = open("test.out","w") n,k= map(int, input().split()) l=input() m=list("ABCDEFGHIJKLMNOPQRSTUVWXYZ")[:k] d=dict() for i in m: d[i] = 0 for j in l: d[j] += 1 print(min(d.values()) * k) ```
output
1
20,287
0
40,575
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a string s of length n, which consists only of the first k letters of the Latin alphabet. All letters in string s are uppercase. A subsequence of string s is a string that can be ...
instruction
0
20,288
0
40,576
Yes
output
1
20,288
0
40,577
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a string s of length n, which consists only of the first k letters of the Latin alphabet. All letters in string s are uppercase. A subsequence of string s is a string that can be ...
instruction
0
20,289
0
40,578
Yes
output
1
20,289
0
40,579
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a string s of length n, which consists only of the first k letters of the Latin alphabet. All letters in string s are uppercase. A subsequence of string s is a string that can be ...
instruction
0
20,290
0
40,580
Yes
output
1
20,290
0
40,581
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a string s of length n, which consists only of the first k letters of the Latin alphabet. All letters in string s are uppercase. A subsequence of string s is a string that can be ...
instruction
0
20,291
0
40,582
Yes
output
1
20,291
0
40,583
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a string s of length n, which consists only of the first k letters of the Latin alphabet. All letters in string s are uppercase. A subsequence of string s is a string that can be ...
instruction
0
20,292
0
40,584
No
output
1
20,292
0
40,585
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a string s of length n, which consists only of the first k letters of the Latin alphabet. All letters in string s are uppercase. A subsequence of string s is a string that can be ...
instruction
0
20,293
0
40,586
No
output
1
20,293
0
40,587
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a string s of length n, which consists only of the first k letters of the Latin alphabet. All letters in string s are uppercase. A subsequence of string s is a string that can be ...
instruction
0
20,294
0
40,588
No
output
1
20,294
0
40,589
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a string s of length n, which consists only of the first k letters of the Latin alphabet. All letters in string s are uppercase. A subsequence of string s is a string that can be ...
instruction
0
20,295
0
40,590
No
output
1
20,295
0
40,591
Provide tags and a correct Python 3 solution for this coding contest problem. Long ago, when Petya was a schoolboy, he was very much interested in the Petr# language grammar. During one lesson Petya got interested in the following question: how many different continuous substrings starting with the sbegin and ending w...
instruction
0
20,350
0
40,700
Tags: brute force, data structures, hashing, strings Correct Solution: ``` from functools import cmp_to_key def calc_lcp(s, sa): rank = [0 for _ in range(len(s))] for i in range(len(s)): rank[sa[i]] = i lcp = [0 for _ in range(len(s) - 1)] h = 0 for i in range(len(s)): if...
output
1
20,350
0
40,701
Provide tags and a correct Python 3 solution for this coding contest problem. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to change at most one letter in the string (or do no ch...
instruction
0
20,827
0
41,654
Tags: brute force Correct Solution: ``` s = input().strip() s = s.replace("VK", "*") cnt = sum(map(lambda x: x=="*",s)) if "VV" in s or "KK" in s: cnt +=1 print(cnt) ```
output
1
20,827
0
41,655
Provide tags and a correct Python 3 solution for this coding contest problem. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to change at most one letter in the string (or do no ch...
instruction
0
20,828
0
41,656
Tags: brute force Correct Solution: ``` s=input() cnt=s.count("VK") s=s.replace("VK"," ") if ("VV" in s) or ("KK" in s): cnt+=1 print(cnt) ```
output
1
20,828
0
41,657
Provide tags and a correct Python 3 solution for this coding contest problem. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to change at most one letter in the string (or do no ch...
instruction
0
20,829
0
41,658
Tags: brute force Correct Solution: ``` s=list(input()) n=len(s) x,y=0,0 for i in range(n-1): if(s[i]=='V' and s[i+1]=='K'): s[i],s[i+1]='k','k' x=x+1 s=''.join(s) if('VV' in s or 'KK' in s): x=x+1 print(x) ```
output
1
20,829
0
41,659
Provide tags and a correct Python 3 solution for this coding contest problem. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to change at most one letter in the string (or do no ch...
instruction
0
20,830
0
41,660
Tags: brute force Correct Solution: ``` def main(): a = input() b = {} pairs = 0 max = 0 b[0] = 0 for i in range(1, len(a)): if a[i] is a[i-1]: b[i] = b[i-1] + 1 elif a[i] is 'K': pairs += 1 b[i-1] -= 1 b[i] = -1 else: b[i] = 0 for i in range(1, len(a)): ...
output
1
20,830
0
41,661
Provide tags and a correct Python 3 solution for this coding contest problem. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to change at most one letter in the string (or do no ch...
instruction
0
20,831
0
41,662
Tags: brute force Correct Solution: ``` a = input() m = a.count('VK') for i in range(len(a)): if a[i] == 'V': a = a[:i]+'K'+a[i+1:] else: a = a[:i]+'V'+a[i+1:] if a.count('VK')>m: m = a.count('VK') if a[i] == 'V': a = a[:i]+'K'+a[i+1:] else: a = a[:i]+'V'+a[i+1:] print(m) ```
output
1
20,831
0
41,663
Provide tags and a correct Python 3 solution for this coding contest problem. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to change at most one letter in the string (or do no ch...
instruction
0
20,832
0
41,664
Tags: brute force Correct Solution: ``` string = input() length = len(string) maximum = 0 j=0 for i in range(length-1): if(string[i] == 'V' and string[i+1] == 'K'): j+=1 if(j>maximum): maximum = j if(string[0] == 'V'): string = 'K'+string[1:] else: string = 'V'+string[1:] j=0 for i in range(length-1): if(strin...
output
1
20,832
0
41,665
Provide tags and a correct Python 3 solution for this coding contest problem. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to change at most one letter in the string (or do no ch...
instruction
0
20,833
0
41,666
Tags: brute force Correct Solution: ``` def str_finder(s): counter = counter_str(s) for i in range(len(s)): if s[i] == "V": new = s[:i] + 'K' + s[i + 1:] else: new = s[:i] + 'V' + s[i + 1:] if counter_str(new) > counter: counter = counter_str(new) ...
output
1
20,833
0
41,667
Provide tags and a correct Python 3 solution for this coding contest problem. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to change at most one letter in the string (or do no ch...
instruction
0
20,834
0
41,668
Tags: brute force Correct Solution: ``` s = 'K' + input() + 'V' print(s.count('VK') + ('VVV' in s or 'KKK' in s)) ```
output
1
20,834
0
41,669
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to chang...
instruction
0
20,835
0
41,670
Yes
output
1
20,835
0
41,671
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to chang...
instruction
0
20,836
0
41,672
Yes
output
1
20,836
0
41,673
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to chang...
instruction
0
20,837
0
41,674
Yes
output
1
20,837
0
41,675
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to chang...
instruction
0
20,838
0
41,676
Yes
output
1
20,838
0
41,677
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to chang...
instruction
0
20,839
0
41,678
No
output
1
20,839
0
41,679
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to chang...
instruction
0
20,840
0
41,680
No
output
1
20,840
0
41,681
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to chang...
instruction
0
20,841
0
41,682
No
output
1
20,841
0
41,683
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only these two letters. He really likes it when the string "VK" appears, so he wishes to chang...
instruction
0
20,842
0
41,684
No
output
1
20,842
0
41,685
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a string s, initially consisting of n lowercase Latin letters. After that, you perform k operations with it, where <image>. During i-th operation you must erase some substring of l...
instruction
0
20,895
0
41,790
No
output
1
20,895
0
41,791
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a string s, initially consisting of n lowercase Latin letters. After that, you perform k operations with it, where <image>. During i-th operation you must erase some substring of l...
instruction
0
20,896
0
41,792
No
output
1
20,896
0
41,793
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a string s, initially consisting of n lowercase Latin letters. After that, you perform k operations with it, where <image>. During i-th operation you must erase some substring of l...
instruction
0
20,897
0
41,794
No
output
1
20,897
0
41,795
Provide a correct Python 3 solution for this coding contest problem. You have two strings A = A_1 A_2 ... A_n and B = B_1 B_2 ... B_n of the same length consisting of 0 and 1. You can transform A using the following operations in any order and as many times as you want: * Shift A by one character to the left (i.e., ...
instruction
0
21,023
0
42,046
"Correct Solution: ``` A=input() B=input() N=len(A) if B.count("1")==0: if A==B: print(0) else: print(-1) exit() L=[-1]*N R=[-1]*N for i in range(N): id=0 while B[(i-id)%N]!="1": id+=1 L[i]=id id=0 while B[(i+id)%N]!="1": id+=1 R[i]=id ans=10**18 ...
output
1
21,023
0
42,047
Provide a correct Python 3 solution for this coding contest problem. You have two strings A = A_1 A_2 ... A_n and B = B_1 B_2 ... B_n of the same length consisting of 0 and 1. You can transform A using the following operations in any order and as many times as you want: * Shift A by one character to the left (i.e., ...
instruction
0
21,024
0
42,048
"Correct Solution: ``` import sys readline = sys.stdin.readline A = list(map(int, readline().strip())) B = list(map(int, readline().strip())) N = len(A) Ao = A[:] inf = 10**9+7 if sum(B): ans = inf CRo = [None]*N A2 = A + A B2 = B + B pre = None for i in range(2*N-1, N-1, -1): if B2[i]:...
output
1
21,024
0
42,049
Provide a correct Python 3 solution for this coding contest problem. You have two strings A = A_1 A_2 ... A_n and B = B_1 B_2 ... B_n of the same length consisting of 0 and 1. You can transform A using the following operations in any order and as many times as you want: * Shift A by one character to the left (i.e., ...
instruction
0
21,027
0
42,054
"Correct Solution: ``` mod = 1000000007 eps = 10**-9 def main(): import sys input = sys.stdin.readline A = input().rstrip('\n') B = input().rstrip('\n') N = len(A) if A == B: print(0) exit() if int(B) == 0: print(-1) exit() def solve(A, B): le...
output
1
21,027
0
42,055
Provide a correct Python 3 solution for this coding contest problem. You have two strings A = A_1 A_2 ... A_n and B = B_1 B_2 ... B_n of the same length consisting of 0 and 1. You can transform A using the following operations in any order and as many times as you want: * Shift A by one character to the left (i.e., ...
instruction
0
21,028
0
42,056
"Correct Solution: ``` import math import fractions #import sys #input = sys.stdin.readline def make_divisors(n): divisors = [] for i in range(1, int(n**0.5)+1): if n % i == 0: divisors.append(i) if i != n // i: divisors.append(n//i) # divisors.sort() re...
output
1
21,028
0
42,057
Provide a correct Python 3 solution for this coding contest problem. You have two strings A = A_1 A_2 ... A_n and B = B_1 B_2 ... B_n of the same length consisting of 0 and 1. You can transform A using the following operations in any order and as many times as you want: * Shift A by one character to the left (i.e., ...
instruction
0
21,029
0
42,058
"Correct Solution: ``` INF=10**18 A=list(map(lambda x:ord(x)-48,list(input()))) B=list(map(lambda x:ord(x)-48,list(input()))) fl=False for i in B: fl|=i if fl==False: for i in A: if i: print("-1") exit(0) print("0") exit(0) n=len(A) bi=[] for i in range(n): bi.append([0,0,i]) for j in range(n): i...
output
1
21,029
0
42,059
Provide tags and a correct Python 3 solution for this coding contest problem. A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "xy" are not. A string is called a substring of...
instruction
0
21,197
0
42,394
Tags: constructive algorithms, strings Correct Solution: ``` input() print("".join(sorted(input()))) ```
output
1
21,197
0
42,395
Provide tags and a correct Python 3 solution for this coding contest problem. A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "xy" are not. A string is called a substring of...
instruction
0
21,198
0
42,396
Tags: constructive algorithms, strings Correct Solution: ``` from sys import stdin,stdout n = stdin.readline() b = [(lambda s : sorted(s))(list(stdin.readline()))] stdout.write(''.join(b[0])) ```
output
1
21,198
0
42,397
Provide tags and a correct Python 3 solution for this coding contest problem. A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "xy" are not. A string is called a substring of...
instruction
0
21,199
0
42,398
Tags: constructive algorithms, strings Correct Solution: ``` import math def is_palindrome(string): up_to_not_including = math.ceil(len(string)) for i in range(up_to_not_including): if string[i] != string[len(string) - 1 - i]: return False return True def count(string): print(string) count = 0 for i in ran...
output
1
21,199
0
42,399
Provide tags and a correct Python 3 solution for this coding contest problem. A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "xy" are not. A string is called a substring of...
instruction
0
21,200
0
42,400
Tags: constructive algorithms, strings Correct Solution: ``` nn=int(input()) xx=list(input()) xx.sort() a=''.join(xx) print(a) ```
output
1
21,200
0
42,401
Provide tags and a correct Python 3 solution for this coding contest problem. A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "xy" are not. A string is called a substring of...
instruction
0
21,201
0
42,402
Tags: constructive algorithms, strings Correct Solution: ``` input() print(''.join(sorted(input()))) ```
output
1
21,201
0
42,403
Provide tags and a correct Python 3 solution for this coding contest problem. A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "xy" are not. A string is called a substring of...
instruction
0
21,202
0
42,404
Tags: constructive algorithms, strings Correct Solution: ``` n=int(input());print(''.join(sorted(input()))) ```
output
1
21,202
0
42,405
Provide tags and a correct Python 3 solution for this coding contest problem. A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "xy" are not. A string is called a substring of...
instruction
0
21,203
0
42,406
Tags: constructive algorithms, strings Correct Solution: ``` input();print(''.join(sorted(list(input())))) ```
output
1
21,203
0
42,407
Provide tags and a correct Python 3 solution for this coding contest problem. A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "xy" are not. A string is called a substring of...
instruction
0
21,204
0
42,408
Tags: constructive algorithms, strings Correct Solution: ``` n=int(input()) s=input() r=sorted(s) print(''.join(r)) ```
output
1
21,204
0
42,409
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "...
instruction
0
21,205
0
42,410
Yes
output
1
21,205
0
42,411
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "...
instruction
0
21,206
0
42,412
Yes
output
1
21,206
0
42,413
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "...
instruction
0
21,207
0
42,414
Yes
output
1
21,207
0
42,415
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "...
instruction
0
21,208
0
42,416
Yes
output
1
21,208
0
42,417
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "...
instruction
0
21,209
0
42,418
No
output
1
21,209
0
42,419
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "...
instruction
0
21,210
0
42,420
No
output
1
21,210
0
42,421
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "...
instruction
0
21,211
0
42,422
No
output
1
21,211
0
42,423