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Provide tags and a correct Python 3 solution for this coding contest problem. A substring of some string is called the most frequent, if the number of its occurrences is not less than number of occurrences of any other substring. You are given a set of strings. A string (not necessarily from this set) is called good ...
instruction
0
61,997
0
123,994
Tags: constructive algorithms, graphs, implementation Correct Solution: ``` import sys n = int(input()) a=[] for i in range(n): a.append([j for j in input()]) b=[] for i in range(n): b.append({}) for j in a[i]: if j in b[i]: print('NO') sys.exit() b[i][j]=1 c=[-1 for i in range(26)] d=[-1 for i in range(...
output
1
61,997
0
123,995
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A substring of some string is called the most frequent, if the number of its occurrences is not less than number of occurrences of any other substring. You are given a set of strings. A string ...
instruction
0
61,998
0
123,996
Yes
output
1
61,998
0
123,997
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A substring of some string is called the most frequent, if the number of its occurrences is not less than number of occurrences of any other substring. You are given a set of strings. A string ...
instruction
0
61,999
0
123,998
Yes
output
1
61,999
0
123,999
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A substring of some string is called the most frequent, if the number of its occurrences is not less than number of occurrences of any other substring. You are given a set of strings. A string ...
instruction
0
62,000
0
124,000
Yes
output
1
62,000
0
124,001
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A substring of some string is called the most frequent, if the number of its occurrences is not less than number of occurrences of any other substring. You are given a set of strings. A string ...
instruction
0
62,001
0
124,002
Yes
output
1
62,001
0
124,003
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A substring of some string is called the most frequent, if the number of its occurrences is not less than number of occurrences of any other substring. You are given a set of strings. A string ...
instruction
0
62,002
0
124,004
No
output
1
62,002
0
124,005
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A substring of some string is called the most frequent, if the number of its occurrences is not less than number of occurrences of any other substring. You are given a set of strings. A string ...
instruction
0
62,003
0
124,006
No
output
1
62,003
0
124,007
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A substring of some string is called the most frequent, if the number of its occurrences is not less than number of occurrences of any other substring. You are given a set of strings. A string ...
instruction
0
62,004
0
124,008
No
output
1
62,004
0
124,009
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A substring of some string is called the most frequent, if the number of its occurrences is not less than number of occurrences of any other substring. You are given a set of strings. A string ...
instruction
0
62,005
0
124,010
No
output
1
62,005
0
124,011
Provide a correct Python 3 solution for this coding contest problem. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That is, the value is the longest length of the following two ...
instruction
0
62,125
0
124,250
"Correct Solution: ``` s = input() K = int(input()) n = len(s) t = s[::-1] if 2*K+1 >= n: print(n) exit() dp = [[[0 for i in range(K+1)] for j in range(n+1)] for k in range(n+1)] if n == 2 and K == 0: if s == t: print(2) exit() else: print(1) exit() ans = min(2*K+1,n) for center in range(1,n-1):...
output
1
62,125
0
124,251
Provide a correct Python 3 solution for this coding contest problem. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That is, the value is the longest length of the following two ...
instruction
0
62,126
0
124,252
"Correct Solution: ``` def get_ind(l, r): mod = 3 return OFFSET * (l % mod) + r s = input() n = len(s) k = int(input()) dp = [[0] * ((n + 1) * 3) for i in range(k + 1)] OFFSET = n + 1 # 長さ1のときの初期化 for i in range(n): dp[0][get_ind(i, i + 1)] = 1 # 長さ2~nのときのDP for length in range(2, n + 1): for l in r...
output
1
62,126
0
124,253
Provide a correct Python 3 solution for this coding contest problem. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That is, the value is the longest length of the following two ...
instruction
0
62,127
0
124,254
"Correct Solution: ``` """ https://atcoder.jp/contests/agc021/tasks/agc021_d ある部分でcutしたとする。 前半と後半のLCSを求めたとすると、交差した後のLCSの長さも同じ →左からindex iまでと右からindex jまでのLCSを求めればいい (i < j) あとは、普通のLCSと同様のdpでいける dp[i][j][k] = 左からi番目の文字までと、右からindex jの文字までのk回替えた際のLCS長さ あとは2倍すれば大体行ける? i+1 == jでは、2倍すればおk i+1 < j では、真ん中の文字を使えるので、2倍して1足す ...
output
1
62,127
0
124,255
Provide a correct Python 3 solution for this coding contest problem. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That is, the value is the longest length of the following two ...
instruction
0
62,128
0
124,256
"Correct Solution: ``` def examA(): N = I() ans = 0 print(ans) return # 参考 https://atcoder.jp/contests/agc021/submissions/8392122 def examB(): def norm2(vec): return math.sqrt(vec[0] ** 2 + vec[1] ** 2) # any 2 points must have different position. def ConvexHull(point_list): ...
output
1
62,128
0
124,257
Provide a correct Python 3 solution for this coding contest problem. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That is, the value is the longest length of the following two ...
instruction
0
62,129
0
124,258
"Correct Solution: ``` import sys readline = sys.stdin.buffer.readline ns = lambda: readline().rstrip() ni = lambda: int(readline().rstrip()) nm = lambda: map(int, readline().split()) nl = lambda: list(map(int, readline().split())) def solve(): s = list(ns()) ls = len(s) lk = ni() dp = [[[0]*ls for _ in rang...
output
1
62,129
0
124,259
Provide a correct Python 3 solution for this coding contest problem. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That is, the value is the longest length of the following two ...
instruction
0
62,130
0
124,260
"Correct Solution: ``` def main(): s = input() n = len(s) k = int(input()) # dp[使った回数][左端からの距離][左端] dp = [[[1]*(n-i) for i in range(n)] for _ in range(k+1)] for i in range(n-1): if s[i] == s[i+1]: dp[0][1][i] = 2 if k > 0: for cnt in range(1, k+1): fo...
output
1
62,130
0
124,261
Provide a correct Python 3 solution for this coding contest problem. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That is, the value is the longest length of the following two ...
instruction
0
62,131
0
124,262
"Correct Solution: ``` def main(): s = input() n = len(s) k = int(input()) # dp[使った回数][左端からの距離][左端] dp = [[[1]*(n-i) for i in range(n)] for _ in range(k+1)] if n == 1: print(1) return dp2 = dp[0][1] for i in range(n-1): if s[i] == s[i+1]: dp2[i] = 2 ...
output
1
62,131
0
124,263
Provide a correct Python 3 solution for this coding contest problem. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That is, the value is the longest length of the following two ...
instruction
0
62,132
0
124,264
"Correct Solution: ``` def solve(s, k): n = len(s) pdp = [[0] * (k + 1) for _ in range(n + 1)] for l in range(n - 1, -1, -1): dp = [[0] * (k + 1) for _ in range(n + 1)] for r in range(l, n): dpr, dpr1 = dp[r], pdp[r - 1] inc = 1 if l == r else 2 is_same = ...
output
1
62,132
0
124,265
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That i...
instruction
0
62,133
0
124,266
Yes
output
1
62,133
0
124,267
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That i...
instruction
0
62,134
0
124,268
Yes
output
1
62,134
0
124,269
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That i...
instruction
0
62,135
0
124,270
Yes
output
1
62,135
0
124,271
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That i...
instruction
0
62,136
0
124,272
Yes
output
1
62,136
0
124,273
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That i...
instruction
0
62,137
0
124,274
No
output
1
62,137
0
124,275
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That i...
instruction
0
62,138
0
124,276
No
output
1
62,138
0
124,277
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That i...
instruction
0
62,139
0
124,278
No
output
1
62,139
0
124,279
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Takahashi has decided to give a string to his mother. The value of a string T is the length of the longest common subsequence of T and T', where T' is the string obtained by reversing T. That i...
instruction
0
62,140
0
124,280
No
output
1
62,140
0
124,281
Provide a correct Python 3 solution for this coding contest problem. Almost periodic string Given the string S. Answer Q queries for this string S. In the i-th query, determine if S [l_i, \ r_i] can be a string of period t_i when you can change from S [l_i, \ r_i] to one character. S [l, \ r] represents the substring...
instruction
0
62,227
0
124,454
"Correct Solution: ``` import sys readline = sys.stdin.readline write = sys.stdout.write def solve(): base = 37; MOD = 10**9 + 9 S = readline().strip() L = len(S) H = [0]*(L+1) pw = [1]*(L+1) ca = ord('a') v = 0 for i in range(L): H[i+1] = v = (v * base + (ord(S[i]) - ca)) % MOD ...
output
1
62,227
0
124,455
Provide tags and a correct Python 3 solution for this coding contest problem. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such that: 1. For each i (1 ≤ i ≤ k), s_{p_i} = 'a...
instruction
0
62,309
0
124,618
Tags: combinatorics, dp, implementation Correct Solution: ``` s = input() A = [] a = 0 b = 0 for i in range(len(s)): if s[i] == 'a': a += 1 b = 0 if s[i] == 'b': b += 1 if a > 0: A.append(a); a = 0 if a > 0: A.append(a) if len(A) > 0: dp = [0] * (...
output
1
62,309
0
124,619
Provide tags and a correct Python 3 solution for this coding contest problem. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such that: 1. For each i (1 ≤ i ≤ k), s_{p_i} = 'a...
instruction
0
62,310
0
124,620
Tags: combinatorics, dp, implementation Correct Solution: ``` r = t = 0 s = input() p = list(s) for k in s: if k == 'b': t = r if k == 'a': r = (r + t + 1) % (10**9 + 7) print(r) ```
output
1
62,310
0
124,621
Provide tags and a correct Python 3 solution for this coding contest problem. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such that: 1. For each i (1 ≤ i ≤ k), s_{p_i} = 'a...
instruction
0
62,311
0
124,622
Tags: combinatorics, dp, implementation Correct Solution: ``` s = input() mod = 10**9 + 7 L = [] c = 0 f = 0 for i in s: if i == 'a': f = 0 c += 1 elif i == 'b' and f == 0: L.append(c) c = 0 f = 1 if c > 0 and f == 0: L.append(c) res = 1 for i in range(len(L)): re...
output
1
62,311
0
124,623
Provide tags and a correct Python 3 solution for this coding contest problem. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such that: 1. For each i (1 ≤ i ≤ k), s_{p_i} = 'a...
instruction
0
62,312
0
124,624
Tags: combinatorics, dp, implementation Correct Solution: ``` mod = int(1e9) + 7 s = input() n = len(s) ans = 1 kol = 0 tmp = 0 for c in s: if c == 'b': ans *= (kol + 1) ans = ans % mod kol = 0 if c == 'a': kol += 1 tmp += 1 print((ans * (kol + 1) - 1) % mod) ```
output
1
62,312
0
124,625
Provide tags and a correct Python 3 solution for this coding contest problem. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such that: 1. For each i (1 ≤ i ≤ k), s_{p_i} = 'a...
instruction
0
62,313
0
124,626
Tags: combinatorics, dp, implementation Correct Solution: ``` import re s = input() s = re.sub(r'[^a-b]', '', s) s = re.sub(r'b+', 'b', s) next_b = [len(s)-1 for _ in range(len(s))] last_b_index = -1 i = len(s) - 1 while i>=0: if last_b_index !=-1: next_b[i] = last_b_index if s[i] == ...
output
1
62,313
0
124,627
Provide tags and a correct Python 3 solution for this coding contest problem. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such that: 1. For each i (1 ≤ i ≤ k), s_{p_i} = 'a...
instruction
0
62,314
0
124,628
Tags: combinatorics, dp, implementation Correct Solution: ``` import sys if __name__ == "__main__": # single variables s = [str(val) for val in input().split()][0] singles = 0 for i in s: if(i == 'a'): singles +=1 count = 0 groups = [] for i in s: if(i =...
output
1
62,314
0
124,629
Provide tags and a correct Python 3 solution for this coding contest problem. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such that: 1. For each i (1 ≤ i ≤ k), s_{p_i} = 'a...
instruction
0
62,315
0
124,630
Tags: combinatorics, dp, implementation Correct Solution: ``` line = list(input()) + ['b'] a = [] count = 0 for i in line: if i == 'b' and count > 0: a.append(count) count = 0 if i == 'a': count += 1 ans = 1 for i in a: ans *= i + 1 ans %= 1000000007 print(ans - 1) ```
output
1
62,315
0
124,631
Provide tags and a correct Python 3 solution for this coding contest problem. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such that: 1. For each i (1 ≤ i ≤ k), s_{p_i} = 'a...
instruction
0
62,316
0
124,632
Tags: combinatorics, dp, implementation Correct Solution: ``` st, count, ans = input(), 0, 1 for char in st: if (char == 'a'): count+=1 elif(char == 'b' and count > 0): ans*=(count+1) count = 0 ans = (ans*(count+1)-1) if count > 0 else ans-1 print(ans%(10**9+7)) ```
output
1
62,316
0
124,633
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such th...
instruction
0
62,317
0
124,634
Yes
output
1
62,317
0
124,635
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such th...
instruction
0
62,318
0
124,636
Yes
output
1
62,318
0
124,637
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such th...
instruction
0
62,319
0
124,638
Yes
output
1
62,319
0
124,639
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such th...
instruction
0
62,320
0
124,640
Yes
output
1
62,320
0
124,641
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such th...
instruction
0
62,321
0
124,642
No
output
1
62,321
0
124,643
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such th...
instruction
0
62,322
0
124,644
No
output
1
62,322
0
124,645
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such th...
instruction
0
62,323
0
124,646
No
output
1
62,323
0
124,647
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. The Fair Nut found a string s. The string consists of lowercase Latin letters. The Nut is a curious guy, so he wants to find the number of strictly increasing sequences p_1, p_2, …, p_k, such th...
instruction
0
62,324
0
124,648
No
output
1
62,324
0
124,649
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Roman and Denis are on the trip to the programming competition. Since the trip was long, they soon got bored, and hence decided to came up with something. Roman invented a pizza's recipe, while ...
instruction
0
62,333
0
124,666
Yes
output
1
62,333
0
124,667
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Roman and Denis are on the trip to the programming competition. Since the trip was long, they soon got bored, and hence decided to came up with something. Roman invented a pizza's recipe, while ...
instruction
0
62,334
0
124,668
Yes
output
1
62,334
0
124,669
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Roman and Denis are on the trip to the programming competition. Since the trip was long, they soon got bored, and hence decided to came up with something. Roman invented a pizza's recipe, while ...
instruction
0
62,335
0
124,670
No
output
1
62,335
0
124,671
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Roman and Denis are on the trip to the programming competition. Since the trip was long, they soon got bored, and hence decided to came up with something. Roman invented a pizza's recipe, while ...
instruction
0
62,336
0
124,672
No
output
1
62,336
0
124,673
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Roman and Denis are on the trip to the programming competition. Since the trip was long, they soon got bored, and hence decided to came up with something. Roman invented a pizza's recipe, while ...
instruction
0
62,337
0
124,674
No
output
1
62,337
0
124,675
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Roman and Denis are on the trip to the programming competition. Since the trip was long, they soon got bored, and hence decided to came up with something. Roman invented a pizza's recipe, while ...
instruction
0
62,338
0
124,676
No
output
1
62,338
0
124,677
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a string s consisting of lowercase English letters and a number k. Let's call a string consisting of lowercase English letters beautiful if the number of occurrences of each letter in that string is divisible by k. You are aske...
instruction
0
62,511
0
125,022
Tags: binary search, brute force, constructive algorithms, greedy, strings Correct Solution: ``` gans = [] for _ in range(int(input())): n, k = map(int, input().split()) u = list(input()) for i in range(n): u[i] = ord(u[i]) - ord('a') z = [] for i in range(26): z.append([]) z...
output
1
62,511
0
125,023
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a string s consisting of lowercase English letters and a number k. Let's call a string consisting of lowercase English letters beautiful if the number of occurrences of each letter in that string is divisible by k. You are aske...
instruction
0
62,512
0
125,024
Tags: binary search, brute force, constructive algorithms, greedy, strings Correct Solution: ``` import sys, math, itertools, random, bisect from collections import defaultdict INF = sys.maxsize def get_ints(): return map(int, sys.stdin.readline().strip().split()) def get_array(): return list(map(int, sys.stdin.readlin...
output
1
62,512
0
125,025