結果
問題 | No.2052 Indegree |
ユーザー | McGregorsh |
提出日時 | 2022-08-22 21:37:40 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 152 ms / 2,000 ms |
コード長 | 1,620 bytes |
コンパイル時間 | 162 ms |
コンパイル使用メモリ | 81,900 KB |
実行使用メモリ | 89,752 KB |
最終ジャッジ日時 | 2024-10-10 06:42:42 |
合計ジャッジ時間 | 4,354 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
(要ログイン)
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 | 152 ms
89,752 KB |
testcase_01 | AC | 152 ms
89,492 KB |
testcase_02 | AC | 145 ms
89,248 KB |
testcase_03 | AC | 147 ms
89,524 KB |
testcase_04 | AC | 147 ms
89,332 KB |
testcase_05 | AC | 150 ms
89,532 KB |
testcase_06 | AC | 151 ms
89,616 KB |
testcase_07 | AC | 148 ms
89,560 KB |
testcase_08 | AC | 147 ms
89,508 KB |
testcase_09 | AC | 150 ms
89,496 KB |
testcase_10 | AC | 149 ms
88,988 KB |
testcase_11 | AC | 150 ms
89,532 KB |
testcase_12 | AC | 149 ms
89,600 KB |
testcase_13 | AC | 147 ms
89,640 KB |
testcase_14 | AC | 145 ms
89,328 KB |
testcase_15 | AC | 147 ms
89,564 KB |
testcase_16 | AC | 149 ms
89,276 KB |
testcase_17 | AC | 147 ms
89,360 KB |
testcase_18 | AC | 149 ms
89,100 KB |
testcase_19 | AC | 146 ms
89,632 KB |
testcase_20 | AC | 148 ms
89,176 KB |
testcase_21 | AC | 149 ms
89,584 KB |
ソースコード
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 ###関数コピーしたか?### def main(): N, M = i_map() nums = [[] for i in range(N)] for i in range(M): a, b = i_map() a -= 1 b -= 1 nums[b].append(a) ans = 0 for i in range(N): if len(nums[i]) == 0: ans += 1 print(ans) if __name__ == '__main__': main()