結果
問題 | No.1390 Get together |
ユーザー | ansain |
提出日時 | 2021-02-12 21:49:32 |
言語 | Python3 (3.12.2 + numpy 1.26.4 + scipy 1.12.0) |
結果 |
AC
|
実行時間 | 671 ms / 2,000 ms |
コード長 | 2,713 bytes |
コンパイル時間 | 114 ms |
コンパイル使用メモリ | 10,952 KB |
実行使用メモリ | 74,344 KB |
最終ジャッジ日時 | 2023-09-27 03:40:25 |
合計ジャッジ時間 | 12,613 ms |
ジャッジサーバーID (参考情報) |
judge11 / judge15 |
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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 | 22 ms
8,936 KB |
testcase_01 | AC | 21 ms
8,804 KB |
testcase_02 | AC | 22 ms
8,816 KB |
testcase_03 | AC | 31 ms
10,096 KB |
testcase_04 | AC | 32 ms
9,832 KB |
testcase_05 | AC | 29 ms
10,028 KB |
testcase_06 | AC | 28 ms
10,016 KB |
testcase_07 | AC | 28 ms
9,900 KB |
testcase_08 | AC | 28 ms
10,024 KB |
testcase_09 | AC | 32 ms
10,404 KB |
testcase_10 | AC | 20 ms
8,808 KB |
testcase_11 | AC | 20 ms
8,796 KB |
testcase_12 | AC | 19 ms
8,996 KB |
testcase_13 | AC | 20 ms
8,824 KB |
testcase_14 | AC | 19 ms
8,876 KB |
testcase_15 | AC | 20 ms
8,856 KB |
testcase_16 | AC | 589 ms
53,956 KB |
testcase_17 | AC | 599 ms
74,344 KB |
testcase_18 | AC | 603 ms
51,144 KB |
testcase_19 | AC | 669 ms
71,588 KB |
testcase_20 | AC | 655 ms
73,156 KB |
testcase_21 | AC | 657 ms
73,024 KB |
testcase_22 | AC | 640 ms
63,556 KB |
testcase_23 | AC | 637 ms
63,488 KB |
testcase_24 | AC | 631 ms
63,480 KB |
testcase_25 | AC | 670 ms
71,456 KB |
testcase_26 | AC | 659 ms
71,584 KB |
testcase_27 | AC | 668 ms
71,624 KB |
testcase_28 | AC | 671 ms
71,592 KB |
testcase_29 | AC | 669 ms
71,584 KB |
testcase_30 | AC | 667 ms
71,580 KB |
testcase_31 | AC | 668 ms
71,524 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 #from scipy.sparse import csr_matrix #from scipy.sparse.csgraph import shortest_path, floyd_warshall, dijkstra, bellman_ford, johnson, NegativeCycleError # numba例 @njit(i1(i4[:], i8[:, :]),cache=True) 引数i4配列、i8 2次元配列,戻り値i1 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) #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 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 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 len(self.roots()) 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,m=map(int, input().split()) bc=[list(map(lambda x: int(x)-1, input().split())) for i in range(n)] dic=defaultdict(list) uf=UnionFind(m) for b,c in bc: dic[c].append(b) if len(dic[c])>1: uf.union(*dic[c][-2:]) print(m-uf.group_count()) if __name__ == '__main__': main()