結果

問題 No.672 最長AB列
ユーザー McGregorshMcGregorsh
提出日時 2023-05-16 23:49:25
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 401 ms / 2,000 ms
コード長 1,964 bytes
コンパイル時間 1,493 ms
コンパイル使用メモリ 86,788 KB
実行使用メモリ 173,992 KB
最終ジャッジ日時 2023-08-21 10:52:02
合計ジャッジ時間 8,993 ms
ジャッジサーバーID
(参考情報)
judge11 / judge13
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 239 ms
91,792 KB
testcase_01 AC 247 ms
91,848 KB
testcase_02 AC 233 ms
91,724 KB
testcase_03 AC 246 ms
92,028 KB
testcase_04 AC 237 ms
91,892 KB
testcase_05 AC 246 ms
92,028 KB
testcase_06 AC 240 ms
92,032 KB
testcase_07 AC 251 ms
91,924 KB
testcase_08 AC 238 ms
92,032 KB
testcase_09 AC 401 ms
173,992 KB
testcase_10 AC 332 ms
132,408 KB
testcase_11 AC 324 ms
132,356 KB
testcase_12 AC 284 ms
108,680 KB
testcase_13 AC 277 ms
108,916 KB
testcase_14 AC 280 ms
108,816 KB
testcase_15 AC 284 ms
108,720 KB
testcase_16 AC 280 ms
108,708 KB
testcase_17 AC 330 ms
136,076 KB
testcase_18 AC 279 ms
120,324 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

import sys, re
from fractions import Fraction
from math import ceil, floor, sqrt, pi, factorial, gcd
from copy import deepcopy
from collections import Counter, deque, defaultdict
from heapq import heapify, heappop, heappush
from itertools import accumulate, product, combinations, combinations_with_replacement, permutations
from bisect import bisect, bisect_left, bisect_right
from functools import reduce
from decimal import Decimal, getcontext, ROUND_HALF_UP
def i_input(): return int(input())
def i_map(): return map(int, input().split())
def i_list(): return list(i_map())
def i_row(N): return [i_input() for _ in range(N)]
def i_row_list(N): return [i_list() for _ in range(N)]
def s_input(): return input()
def s_map(): return input().split()
def s_list(): return list(s_map())
def s_row(N): return [s_input for _ in range(N)]
def s_row_str(N): return [s_list() for _ in range(N)]
def s_row_list(N): return [list(s_input()) for _ in range(N)]
def lcm(a, b): return a * b // gcd(a, b)
def get_distance(x1, y1, x2, y2):
	  d = sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2)
	  return d
def rotate(table):
   	  n_fild = []
   	  for x in zip(*table[::-1]):
   	  	  n_fild.append(x)
   	  return n_fild
sys.setrecursionlimit(10 ** 7)
INF = float('inf')
MOD = 10 ** 9 + 7
MOD2 = 998244353


def main():
   
   S = input()
   N = len(S)
   
   count = [0] * N
   for i in range(N):
   	  if S[i] == 'A':
   	  	  count[i] += 1
   	  else:
   	  	  count[i] -= 1
   
   AC = list(accumulate(count))
   
   P = defaultdict(list)
   Pcou = defaultdict(int)
   for i in range(N):
   	  P[AC[i]].append(i)
   	  Pcou[AC[i]] += 1
   
   for key, value in P.items():
   	  P[key].sort()
   
   now = 0
   ans = 0
   for i in range(N):
   	  if Pcou[now] > 0:
   	  	  point = P[now][-1]
   	  	  cost = point - i + 1
   	  	  ans = max(ans, cost)
   	  if S[i] == 'A':
   	  	  now += 1
   	  else:
   	  	  now -= 1
   print(ans)
   
if __name__ == '__main__':
    main()
    
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