結果
問題 | No.1103 Directed Length Sum |
ユーザー | McGregorsh |
提出日時 | 2022-07-09 20:51:42 |
言語 | PyPy3 (7.3.15) |
結果 |
MLE
|
実行時間 | - |
コード長 | 2,234 bytes |
コンパイル時間 | 439 ms |
コンパイル使用メモリ | 82,568 KB |
実行使用メモリ | 849,096 KB |
最終ジャッジ日時 | 2024-06-10 05:33:56 |
合計ジャッジ時間 | 5,579 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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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 | 146 ms
89,692 KB |
testcase_01 | AC | 141 ms
89,600 KB |
testcase_02 | MLE | - |
testcase_03 | -- | - |
testcase_04 | -- | - |
testcase_05 | -- | - |
testcase_06 | -- | - |
testcase_07 | -- | - |
testcase_08 | -- | - |
testcase_09 | -- | - |
testcase_10 | -- | - |
testcase_11 | -- | - |
testcase_12 | -- | - |
testcase_13 | -- | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
testcase_17 | -- | - |
testcase_18 | -- | - |
testcase_19 | -- | - |
testcase_20 | -- | - |
testcase_21 | -- | - |
testcase_22 | -- | - |
testcase_23 | -- | - |
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)] for i in range(n-1): a, b = i_map() a -= 1 b -= 1 nums[a].append(b) def dfs(start): global count juge[start] = True count += 1 for i in nums[start]: if juge[i]: continue dfs(i) juge = [False] * n root = -1 for i in range(n): dfs(i) #print(count) if count == n: 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()