結果
問題 | No.1637 Easy Tree Query |
ユーザー | ansain |
提出日時 | 2021-08-06 21:44:07 |
言語 | Python3 (3.12.2 + numpy 1.26.4 + scipy 1.12.0) |
結果 |
AC
|
実行時間 | 645 ms / 2,000 ms |
コード長 | 2,117 bytes |
コンパイル時間 | 102 ms |
コンパイル使用メモリ | 12,800 KB |
実行使用メモリ | 39,936 KB |
最終ジャッジ日時 | 2024-09-17 03:47:49 |
合計ジャッジ時間 | 13,976 ms |
ジャッジサーバーID (参考情報) |
judge6 / 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 | 31 ms
10,880 KB |
testcase_01 | AC | 32 ms
11,136 KB |
testcase_02 | AC | 532 ms
36,096 KB |
testcase_03 | AC | 30 ms
10,880 KB |
testcase_04 | AC | 256 ms
23,936 KB |
testcase_05 | AC | 351 ms
20,224 KB |
testcase_06 | AC | 250 ms
17,920 KB |
testcase_07 | AC | 114 ms
11,520 KB |
testcase_08 | AC | 200 ms
21,120 KB |
testcase_09 | AC | 453 ms
29,952 KB |
testcase_10 | AC | 188 ms
16,512 KB |
testcase_11 | AC | 538 ms
32,128 KB |
testcase_12 | AC | 478 ms
27,136 KB |
testcase_13 | AC | 128 ms
16,768 KB |
testcase_14 | AC | 396 ms
30,464 KB |
testcase_15 | AC | 532 ms
32,768 KB |
testcase_16 | AC | 533 ms
35,328 KB |
testcase_17 | AC | 158 ms
16,640 KB |
testcase_18 | AC | 336 ms
20,224 KB |
testcase_19 | AC | 373 ms
22,144 KB |
testcase_20 | AC | 495 ms
26,752 KB |
testcase_21 | AC | 325 ms
24,064 KB |
testcase_22 | AC | 629 ms
35,840 KB |
testcase_23 | AC | 175 ms
17,920 KB |
testcase_24 | AC | 303 ms
24,320 KB |
testcase_25 | AC | 352 ms
19,456 KB |
testcase_26 | AC | 510 ms
28,032 KB |
testcase_27 | AC | 645 ms
34,560 KB |
testcase_28 | AC | 281 ms
19,072 KB |
testcase_29 | AC | 419 ms
25,984 KB |
testcase_30 | AC | 273 ms
25,600 KB |
testcase_31 | AC | 209 ms
11,136 KB |
testcase_32 | AC | 228 ms
19,840 KB |
testcase_33 | AC | 301 ms
16,768 KB |
testcase_34 | AC | 332 ms
39,936 KB |
ソースコード
import sys from collections import defaultdict, Counter, deque from itertools import permutations, combinations, product, combinations_with_replacement, groupby, accumulate import operator from math import sqrt, gcd, factorial #from math import isqrt, prod, comb #python3.8用(notpypy) #from bisect import bisect_left, bisect_right #from functools import lru_cache, reduce #from heapq import heappush, heappop, heapify, heappushpop, heapreplace #import numpy as np #import networkx as nx #from networkx.utils import UnionFind #from numba import njit, b1, i1, i4, i8, f8 #numba例 @njit(i1(i4[:], i8[:, :]),cache=True) 引数i4配列、i8 2次元配列,戻り値i1 #from scipy.sparse import csr_matrix #from scipy.sparse.csgraph import shortest_path, floyd_warshall, dijkstra, bellman_ford, johnson, NegativeCycleError, maximum_bipartite_matching, maximum_flow, minimum_spanning_tree def input(): return sys.stdin.readline().rstrip() def divceil(n, k): return 1+(n-1)//k # n/kの切り上げを返す def yn(hantei, yes='Yes', no='No'): print(yes if hantei else no) def main(): """ グラフが隣接辺で与えられる場合 """ mod = 10**9+7 mod2 = 998244353 n,q=map(int, input().split()) graph = [[] for _ in range(n)] for i in range(n-1): a, b = map(lambda x: int(x)-1, input().split()) graph[a].append(b) graph[b].append(a) mother = [[] for _ in range(n)] dp = [1]*n # print(dp) visited = [False]*n visited[0] = True d = deque() d.append(0) def merge(a, b): return (a+b) while d: v = d[-1] if graph[v] == []: # 帰りがけ for m in mother[v]: dp[v] = merge(dp[v], dp[m]) d.pop() else: # 行きがけ i = graph[v].pop() if visited[i]: continue visited[i] = True d.append(i) mother[v].append(i) ans=0 for i in range(q): p,x=map(int, input().split()) p-=1 ans+=dp[p]*x print(ans) if __name__ == '__main__': main()