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Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Consider all binary strings of length m (1 ≀ m ≀ 60). A binary string is a string that consists of the characters 0 and 1 only. For example, 0110 is a binary string, and 012aba is not. Obviously...
instruction
0
105,433
0
210,866
No
output
1
105,433
0
210,867
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Consider all binary strings of length m (1 ≀ m ≀ 60). A binary string is a string that consists of the characters 0 and 1 only. For example, 0110 is a binary string, and 012aba is not. Obviously...
instruction
0
105,434
0
210,868
No
output
1
105,434
0
210,869
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Consider all binary strings of length m (1 ≀ m ≀ 60). A binary string is a string that consists of the characters 0 and 1 only. For example, 0110 is a binary string, and 012aba is not. Obviously...
instruction
0
105,435
0
210,870
No
output
1
105,435
0
210,871
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Consider all binary strings of length m (1 ≀ m ≀ 60). A binary string is a string that consists of the characters 0 and 1 only. For example, 0110 is a binary string, and 012aba is not. Obviously...
instruction
0
105,436
0
210,872
No
output
1
105,436
0
210,873
Provide tags and a correct Python 3 solution for this coding contest problem. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved. There are two binary strings a and...
instruction
0
105,437
0
210,874
Tags: constructive algorithms, data structures, implementation, strings, two pointers Correct Solution: ``` class Solution: def __init__(self, debug=False, n=None, a=None, b=None): if n is None: n, a, b = Solution.input() self.n = n self.a = a self.b = b self.rea...
output
1
105,437
0
210,875
Provide tags and a correct Python 3 solution for this coding contest problem. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved. There are two binary strings a and...
instruction
0
105,438
0
210,876
Tags: constructive algorithms, data structures, implementation, strings, two pointers Correct Solution: ``` from sys import stdin t = int(stdin.readline().strip()) for _ in range(t): n = int(stdin.readline().strip()) a = stdin.readline().strip() b = stdin....
output
1
105,438
0
210,877
Provide tags and a correct Python 3 solution for this coding contest problem. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved. There are two binary strings a and...
instruction
0
105,439
0
210,878
Tags: constructive algorithms, data structures, implementation, strings, two pointers Correct Solution: ``` import sys, os, io def rs(): return sys.stdin.readline().rstrip() def ri(): return int(sys.stdin.readline()) def ria(): return list(map(int, sys.stdin.readline().split())) def ws(s): sys.stdout.write(s + '\n') de...
output
1
105,439
0
210,879
Provide tags and a correct Python 3 solution for this coding contest problem. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved. There are two binary strings a and...
instruction
0
105,440
0
210,880
Tags: constructive algorithms, data structures, implementation, strings, two pointers Correct Solution: ``` for _ in range(int(input())): n=int(input()) #e=[int(x) for x in input().split()] #a=list(input()) #b=list(input()) a=[int(x) for x in input()] b=[int(x) for x in input()] a.append(0) ...
output
1
105,440
0
210,881
Provide tags and a correct Python 3 solution for this coding contest problem. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved. There are two binary strings a and...
instruction
0
105,441
0
210,882
Tags: constructive algorithms, data structures, implementation, strings, two pointers Correct Solution: ``` import sys input = lambda: sys.stdin.readline().rstrip() # import sys # import math # input = sys.stdin.readline from collections import deque from queue import LifoQueue for _ in range(int(input())): n = int(in...
output
1
105,441
0
210,883
Provide tags and a correct Python 3 solution for this coding contest problem. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved. There are two binary strings a and...
instruction
0
105,442
0
210,884
Tags: constructive algorithms, data structures, implementation, strings, two pointers Correct Solution: ``` t=int(input()) for _ in range(t): n=int(input()) a=input() b=input() aToAllOnesOrZeros=[] for i in range(n-1): if a[i]!=a[i+1]: #flip up to a[i]. Then a[0,1,...i+1] will be unifor...
output
1
105,442
0
210,885
Provide tags and a correct Python 3 solution for this coding contest problem. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved. There are two binary strings a and...
instruction
0
105,443
0
210,886
Tags: constructive algorithms, data structures, implementation, strings, two pointers Correct Solution: ``` import collections t1=int(input()) for _ in range(t1): flipflag=0 bitflag=0 n=int(input()) a2=input() a=collections.deque([]) for i in range(n): a.append(a2[i]) b=input() ans=[] for i in ran...
output
1
105,443
0
210,887
Provide tags and a correct Python 3 solution for this coding contest problem. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem are solved. There are two binary strings a and...
instruction
0
105,444
0
210,888
Tags: constructive algorithms, data structures, implementation, strings, two pointers Correct Solution: ``` import sys input = sys.stdin.readline from collections import deque t = int(input()) for _ in range(t): n = int(input()) a = input() b = input() q = deque([i for i in range(n)]) rev = False...
output
1
105,444
0
210,889
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ...
instruction
0
105,445
0
210,890
Yes
output
1
105,445
0
210,891
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ...
instruction
0
105,446
0
210,892
Yes
output
1
105,446
0
210,893
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ...
instruction
0
105,447
0
210,894
Yes
output
1
105,447
0
210,895
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ...
instruction
0
105,448
0
210,896
Yes
output
1
105,448
0
210,897
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ...
instruction
0
105,449
0
210,898
No
output
1
105,449
0
210,899
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ...
instruction
0
105,450
0
210,900
No
output
1
105,450
0
210,901
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ...
instruction
0
105,451
0
210,902
No
output
1
105,451
0
210,903
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. This is the hard version of the problem. The difference between the versions is the constraint on n and the required number of operations. You can make hacks only if all versions of the problem ...
instruction
0
105,452
0
210,904
No
output
1
105,452
0
210,905
Provide tags and a correct Python 3 solution for this coding contest problem. Kawashiro Nitori is a girl who loves competitive programming. One day she found a string and an integer. As an advanced problem setter, she quickly thought of a problem. Given a string s and a parameter k, you need to check if there exist ...
instruction
0
105,478
0
210,956
Tags: brute force, constructive algorithms, greedy, strings Correct Solution: ``` def solve(): n,k=map(int,input().split()) s=input() if k>=n/2: return "NO" for i in range(k): if s[i]!=s[-(i+1)]: return "NO" else: return "YES" for _ in range(int(input())): pr...
output
1
105,478
0
210,957
Provide tags and a correct Python 3 solution for this coding contest problem. Kawashiro Nitori is a girl who loves competitive programming. One day she found a string and an integer. As an advanced problem setter, she quickly thought of a problem. Given a string s and a parameter k, you need to check if there exist ...
instruction
0
105,479
0
210,958
Tags: brute force, constructive algorithms, greedy, strings Correct Solution: ``` def solve(n, k, s): if k == 0: return "YES" count = 0 if n%2: for i in range(n//2): if s[i] == s[-i-1]: count += 1 else: break if count >= k: ...
output
1
105,479
0
210,959
Provide tags and a correct Python 3 solution for this coding contest problem. Kawashiro Nitori is a girl who loves competitive programming. One day she found a string and an integer. As an advanced problem setter, she quickly thought of a problem. Given a string s and a parameter k, you need to check if there exist ...
instruction
0
105,480
0
210,960
Tags: brute force, constructive algorithms, greedy, strings Correct Solution: ``` t = int(input()) for _ in range(t): n,k = map(int,input().split()) s = input() if 2*k==n: print("NO") continue if k==0: print("YES") continue if s[:k]==s[-k:][::-1]: print("YES")...
output
1
105,480
0
210,961
Provide tags and a correct Python 3 solution for this coding contest problem. Kawashiro Nitori is a girl who loves competitive programming. One day she found a string and an integer. As an advanced problem setter, she quickly thought of a problem. Given a string s and a parameter k, you need to check if there exist ...
instruction
0
105,481
0
210,962
Tags: brute force, constructive algorithms, greedy, strings Correct Solution: ``` for _ in range(int(input())): n, k = map(int, input().split()) S = input() print() if k == 0: print("YES") continue elif S[:k] == (S[::-1])[:k]: if n//2 >= k + 1 - n%2: print("YES") ...
output
1
105,481
0
210,963
Provide tags and a correct Python 3 solution for this coding contest problem. Kawashiro Nitori is a girl who loves competitive programming. One day she found a string and an integer. As an advanced problem setter, she quickly thought of a problem. Given a string s and a parameter k, you need to check if there exist ...
instruction
0
105,482
0
210,964
Tags: brute force, constructive algorithms, greedy, strings Correct Solution: ``` import sys input = lambda: sys.stdin.readline().rstrip("\r\n") inp = lambda: list(map(int,sys.stdin.readline().rstrip("\r\n").split())) mod = 10**9+7; Mod = 998244353; INF = float('inf') #__________________________________________________...
output
1
105,482
0
210,965
Provide tags and a correct Python 3 solution for this coding contest problem. Kawashiro Nitori is a girl who loves competitive programming. One day she found a string and an integer. As an advanced problem setter, she quickly thought of a problem. Given a string s and a parameter k, you need to check if there exist ...
instruction
0
105,483
0
210,966
Tags: brute force, constructive algorithms, greedy, strings Correct Solution: ``` # by the authority of GOD author: Kritarth Sharma # import math from collections import defaultdict,Counter from itertools import permutations from decimal import Decimal, localcontext from collections import defaultdict ii = lambda...
output
1
105,483
0
210,967
Provide tags and a correct Python 3 solution for this coding contest problem. Kawashiro Nitori is a girl who loves competitive programming. One day she found a string and an integer. As an advanced problem setter, she quickly thought of a problem. Given a string s and a parameter k, you need to check if there exist ...
instruction
0
105,484
0
210,968
Tags: brute force, constructive algorithms, greedy, strings Correct Solution: ``` import sys import math import heapq import bisect from collections import Counter from collections import defaultdict from io import BytesIO, IOBase import string class FastIO(IOBase): newlines = 0 def __init__(self, file): ...
output
1
105,484
0
210,969
Provide tags and a correct Python 3 solution for this coding contest problem. Kawashiro Nitori is a girl who loves competitive programming. One day she found a string and an integer. As an advanced problem setter, she quickly thought of a problem. Given a string s and a parameter k, you need to check if there exist ...
instruction
0
105,485
0
210,970
Tags: brute force, constructive algorithms, greedy, strings Correct Solution: ``` t=int(input()) for z in range(t): n,k=[int(q)for q in input().split()] s=input() a=s[:k]+s[n-k:] if k==n/2: print("NO") elif k==0 or a==a[::-1]: print("YES") else: print("NO") ```
output
1
105,485
0
210,971
Provide tags and a correct Python 3 solution for this coding contest problem. Let's introduce the designation <image>, where x is a string, n is a positive integer and operation " + " is the string concatenation operation. For example, [abc, 2] = abcabc. We'll say that string s can be obtained from string t, if we ca...
instruction
0
105,560
0
211,120
Tags: binary search, dfs and similar, strings Correct Solution: ``` b, p = map(int, input().split()) s1 = input() s2 = input() cnt = [0] * len(s2) nxt = [0] * len(s2) for i in range(len(s2)): pos = i for j in range(len(s1)): if s1[j] == s2[pos]: pos += 1 if pos == len(s2): ...
output
1
105,560
0
211,121
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Let's introduce the designation <image>, where x is a string, n is a positive integer and operation " + " is the string concatenation operation. For example, [abc, 2] = abcabc. We'll say that s...
instruction
0
105,561
0
211,122
No
output
1
105,561
0
211,123
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Let's introduce the designation <image>, where x is a string, n is a positive integer and operation " + " is the string concatenation operation. For example, [abc, 2] = abcabc. We'll say that s...
instruction
0
105,562
0
211,124
No
output
1
105,562
0
211,125
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Let's introduce the designation <image>, where x is a string, n is a positive integer and operation " + " is the string concatenation operation. For example, [abc, 2] = abcabc. We'll say that s...
instruction
0
105,563
0
211,126
No
output
1
105,563
0
211,127
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Let's introduce the designation <image>, where x is a string, n is a positive integer and operation " + " is the string concatenation operation. For example, [abc, 2] = abcabc. We'll say that s...
instruction
0
105,564
0
211,128
No
output
1
105,564
0
211,129
Provide tags and a correct Python 3 solution for this coding contest problem. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th...
instruction
0
105,788
0
211,576
Tags: combinatorics, greedy, implementation, math Correct Solution: ``` MOD = int(1e9)+7 def solve(): s = input() r=c=0 for i in range(len(s)-1, -1, -1): if s[i] == 'b': c+=1 else: r+=c c= (c*2)%MOD return r%MOD print(solve()) ```
output
1
105,788
0
211,577
Provide tags and a correct Python 3 solution for this coding contest problem. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th...
instruction
0
105,789
0
211,578
Tags: combinatorics, greedy, implementation, math Correct Solution: ``` MOD = 10**9 + 7 s = input() bcount, count = 0, 0 for c in reversed(s): if c == 'b': bcount += 1 else: count += bcount bcount *= 2 if bcount > 2**62: bcount %= MOD print(count % MOD) ```
output
1
105,789
0
211,579
Provide tags and a correct Python 3 solution for this coding contest problem. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th...
instruction
0
105,790
0
211,580
Tags: combinatorics, greedy, implementation, math Correct Solution: ``` x = input() str0 = x x=x[::-1] # print(x) mod = 10**9 + 7 ans = 0 sum0 = 0 for i in x: if i == 'b': ans += 1 if i == 'a': sum0 += ans sum0 = sum0 % mod ans *=2 ans = ans % mod print(sum0) ```
output
1
105,790
0
211,581
Provide tags and a correct Python 3 solution for this coding contest problem. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th...
instruction
0
105,791
0
211,582
Tags: combinatorics, greedy, implementation, math Correct Solution: ``` s = input() l = [x for x in range(len(s)) if s[x] == 'a'] # print(l) i, step = 0, 0 while l: step = (len(s) + 2*step - l.pop() - 1 - i) % (10 ** 9 + 7) i += 1 print(step) ```
output
1
105,791
0
211,583
Provide tags and a correct Python 3 solution for this coding contest problem. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th...
instruction
0
105,792
0
211,584
Tags: combinatorics, greedy, implementation, math Correct Solution: ``` def main(): s=input() r=0 c=0 m=(10**9)+7 for i in range(len(s)-1,-1,-1): if s[i]=='b': c=(c%m)+1 else: r=((r%m)+(c%m))%m c=(c*2)%m print(r) if __name__=='__main__': ...
output
1
105,792
0
211,585
Provide tags and a correct Python 3 solution for this coding contest problem. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th...
instruction
0
105,793
0
211,586
Tags: combinatorics, greedy, implementation, math Correct Solution: ``` mod = 1000000007 qtdb = 0 jogadas = 0 s = input() for i in range(len(s)-1, -1, -1): if(s[i] == 'b'): qtdb = (qtdb + 1) % mod else: jogadas = (jogadas + qtdb) % mod qtdb = (2 * qtdb) % mod print(jogadas) ```
output
1
105,793
0
211,587
Provide tags and a correct Python 3 solution for this coding contest problem. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th...
instruction
0
105,794
0
211,588
Tags: combinatorics, greedy, implementation, math Correct Solution: ``` s = input() ans, cnt = 0, 0 for i in range(1, len(s) + 1): if s[-i] == 'a': ans = (2 * ans + i - 1 - cnt) % (10 ** 9 + 7) cnt += 1 print(ans) ```
output
1
105,794
0
211,589
Provide tags and a correct Python 3 solution for this coding contest problem. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no "ab" as a substring, our job is done. Print th...
instruction
0
105,795
0
211,590
Tags: combinatorics, greedy, implementation, math Correct Solution: ``` s = input()[::-1] a, b = 0, 0 mod = 10 ** 9 + 7 for i in s: if i == 'b': b += 1 else: a += b a %= mod b <<= 1 b %= mod print(a) ```
output
1
105,795
0
211,591
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no...
instruction
0
105,796
0
211,592
Yes
output
1
105,796
0
211,593
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no...
instruction
0
105,797
0
211,594
Yes
output
1
105,797
0
211,595
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no...
instruction
0
105,798
0
211,596
Yes
output
1
105,798
0
211,597
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no...
instruction
0
105,799
0
211,598
Yes
output
1
105,799
0
211,599
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no...
instruction
0
105,800
0
211,600
No
output
1
105,800
0
211,601
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no...
instruction
0
105,801
0
211,602
No
output
1
105,801
0
211,603
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no...
instruction
0
105,802
0
211,604
No
output
1
105,802
0
211,605
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. We have a string of letters 'a' and 'b'. We want to perform some operations on it. On each step we choose one of substrings "ab" in the string and replace it with the string "bba". If we have no...
instruction
0
105,803
0
211,606
No
output
1
105,803
0
211,607
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are going to take the entrance examination of Kyoto University tomorrow and have decided to memorize a set of strings S that is expected to appear in the examination. Since it is really toug...
instruction
0
106,007
0
212,014
No
output
1
106,007
0
212,015