結果
問題 | No.1103 Directed Length Sum |
ユーザー | McGregorsh |
提出日時 | 2022-07-10 13:55:54 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 1,972 ms / 3,000 ms |
コード長 | 2,021 bytes |
コンパイル時間 | 814 ms |
コンパイル使用メモリ | 81,792 KB |
実行使用メモリ | 234,176 KB |
最終ジャッジ日時 | 2025-01-03 01:41:23 |
合計ジャッジ時間 | 20,866 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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 | 157 ms
89,856 KB |
testcase_01 | AC | 152 ms
90,112 KB |
testcase_02 | AC | 970 ms
222,208 KB |
testcase_03 | AC | 849 ms
234,176 KB |
testcase_04 | AC | 1,136 ms
147,620 KB |
testcase_05 | AC | 1,972 ms
189,952 KB |
testcase_06 | AC | 751 ms
127,616 KB |
testcase_07 | AC | 289 ms
97,792 KB |
testcase_08 | AC | 378 ms
103,520 KB |
testcase_09 | AC | 242 ms
94,848 KB |
testcase_10 | AC | 441 ms
108,544 KB |
testcase_11 | AC | 1,217 ms
153,344 KB |
testcase_12 | AC | 761 ms
128,128 KB |
testcase_13 | AC | 445 ms
109,312 KB |
testcase_14 | AC | 231 ms
93,696 KB |
testcase_15 | AC | 615 ms
119,040 KB |
testcase_16 | AC | 1,413 ms
159,828 KB |
testcase_17 | AC | 1,427 ms
162,560 KB |
testcase_18 | AC | 431 ms
108,544 KB |
testcase_19 | AC | 1,286 ms
153,852 KB |
testcase_20 | AC | 265 ms
96,896 KB |
testcase_21 | AC | 347 ms
101,504 KB |
testcase_22 | AC | 1,059 ms
143,744 KB |
testcase_23 | AC | 650 ms
121,856 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 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 count = 0 ###関数コピーしたか?### def main(): n = int(input()) nums = [[] for i in range(n)] hen = [0] * n for i in range(n-1): a, b = i_map() a -= 1 b -= 1 nums[a].append(b) hen[b] += 1 for i in range(n): if hen[i] == 0: root = i break score = [INF] * n score[root] = 0 que = deque() que.append(root) while que: num = que.popleft() for i in nums[num]: if score[i] == INF: score[i] = score[num] + 1 que.append(i) ans = 0 for i in range(n): point = score[i] ans += point * (point+1) // 2 ans %= MOD print(ans) if __name__ == '__main__': main()