結果
問題 | No.921 ずんだアロー |
ユーザー | McGregorsh |
提出日時 | 2022-07-05 23:50:10 |
言語 | PyPy3 (7.3.15) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,048 bytes |
コンパイル時間 | 196 ms |
コンパイル使用メモリ | 82,304 KB |
実行使用メモリ | 103,936 KB |
最終ジャッジ日時 | 2024-05-09 20:03:04 |
合計ジャッジ時間 | 4,870 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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 | 123 ms
83,668 KB |
testcase_01 | AC | 121 ms
83,136 KB |
testcase_02 | AC | 125 ms
83,720 KB |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | AC | 118 ms
83,200 KB |
testcase_07 | AC | 121 ms
83,712 KB |
testcase_08 | AC | 119 ms
83,516 KB |
testcase_09 | AC | 118 ms
83,520 KB |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | AC | 138 ms
89,728 KB |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | AC | 142 ms
94,592 KB |
testcase_16 | AC | 135 ms
89,732 KB |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | AC | 159 ms
103,552 KB |
testcase_24 | WA | - |
ソースコード
import sys, re 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 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 ###関数コピーしたか?### def main(): n = int(input()) a = i_list() juge = [False] * n for i in range(n-1): if a[i] == a[i+1]: juge[i] = True juge[i+1] = True nums = [] left = 0 right = 0 cou = 0 for i in range(n): if juge[i] == False and cou == 0: left = i cou += 1 if juge[i] and cou == 1: right = i-1 cou = 0 nums.append([left, right]) if len(nums) == 0: if n % 2 == 1: print(n // 2 + 1) exit() else: print(n // 2) exit() #print(nums) ans = sum(juge) for i in range(len(nums)): score = max(0, nums[i][1] - nums[i][0] - 2) ans += score // 2 print(ans) if __name__ == '__main__': main()