結果
問題 | No.1639 最小通信路 |
ユーザー | ansain |
提出日時 | 2021-08-06 21:25:44 |
言語 | Python3 (3.12.2 + numpy 1.26.4 + scipy 1.12.0) |
結果 |
AC
|
実行時間 | 43 ms / 2,000 ms |
コード長 | 2,813 bytes |
コンパイル時間 | 159 ms |
コンパイル使用メモリ | 12,800 KB |
実行使用メモリ | 11,008 KB |
最終ジャッジ日時 | 2024-09-17 01:17:09 |
合計ジャッジ時間 | 3,021 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
(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 | 33 ms
10,880 KB |
testcase_01 | AC | 33 ms
10,880 KB |
testcase_02 | AC | 43 ms
10,880 KB |
testcase_03 | AC | 43 ms
10,880 KB |
testcase_04 | AC | 43 ms
10,880 KB |
testcase_05 | AC | 33 ms
10,880 KB |
testcase_06 | AC | 35 ms
11,008 KB |
testcase_07 | AC | 32 ms
10,880 KB |
testcase_08 | AC | 38 ms
10,880 KB |
testcase_09 | AC | 33 ms
11,008 KB |
testcase_10 | AC | 32 ms
10,880 KB |
testcase_11 | AC | 36 ms
11,008 KB |
testcase_12 | AC | 33 ms
10,880 KB |
testcase_13 | AC | 39 ms
10,880 KB |
testcase_14 | AC | 31 ms
10,880 KB |
testcase_15 | AC | 33 ms
10,880 KB |
testcase_16 | AC | 36 ms
10,880 KB |
testcase_17 | AC | 38 ms
10,880 KB |
testcase_18 | AC | 32 ms
10,880 KB |
testcase_19 | AC | 35 ms
10,880 KB |
testcase_20 | AC | 38 ms
10,880 KB |
testcase_21 | AC | 31 ms
10,880 KB |
testcase_22 | AC | 33 ms
11,008 KB |
testcase_23 | AC | 35 ms
11,008 KB |
testcase_24 | AC | 32 ms
10,880 KB |
testcase_25 | AC | 32 ms
11,008 KB |
testcase_26 | AC | 31 ms
10,880 KB |
testcase_27 | AC | 32 ms
10,880 KB |
testcase_28 | AC | 31 ms
10,880 KB |
testcase_29 | AC | 35 ms
10,880 KB |
testcase_30 | AC | 36 ms
11,008 KB |
testcase_31 | AC | 32 ms
10,880 KB |
testcase_32 | AC | 35 ms
11,008 KB |
testcase_33 | AC | 32 ms
10,880 KB |
testcase_34 | AC | 35 ms
11,008 KB |
testcase_35 | AC | 40 ms
10,880 KB |
testcase_36 | AC | 35 ms
10,880 KB |
testcase_37 | AC | 36 ms
10,880 KB |
testcase_38 | AC | 32 ms
11,008 KB |
testcase_39 | AC | 32 ms
10,880 KB |
testcase_40 | AC | 31 ms
10,880 KB |
testcase_41 | AC | 32 ms
10,880 KB |
testcase_42 | AC | 37 ms
11,008 KB |
testcase_43 | AC | 32 ms
10,880 KB |
testcase_44 | AC | 31 ms
10,880 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) from collections import defaultdict # https://note.nkmk.me/python-union-find/から一部改変 class UnionFind(): def __init__(self, n): self.n = n self.parents = [-1] * n self.group_num = n def find(self, x): if self.parents[x] < 0: return x else: self.parents[x] = self.find(self.parents[x]) return self.parents[x] def union(self, x, y): x = self.find(x) y = self.find(y) if x == y: return self.group_num -= 1 if self.parents[x] > self.parents[y]: x, y = y, x self.parents[x] += self.parents[y] self.parents[y] = x def size(self, x): return -self.parents[self.find(x)] def same(self, x, y): return self.find(x) == self.find(y) def members(self, x): root = self.find(x) return [i for i in range(self.n) if self.find(i) == root] def roots(self): return [i for i, x in enumerate(self.parents) if x < 0] def group_count(self): return self.group_num def all_group_members(self): self.all_group_member = defaultdict(list) for i in range(self.n): self.all_group_member[self.find(i)].append(i) return self.all_group_member def __str__(self): return '\n'.join('{}: {}'.format(r, self.members(r)) for r in self.roots()) def main(): mod = 10**9+7 mod2 = 998244353 n=int(input()) uf=UnionFind(n) ans=0 for i in range((n*(n-1))//2): a,b,c=map(int, input().split()) a-=1 b-=1 if not uf.same(a,b): uf.union(a,b) ans=c print(ans) if __name__ == '__main__': main()