結果
問題 | No.1390 Get together |
ユーザー | itsy68 |
提出日時 | 2022-10-18 03:56:47 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 465 ms / 2,000 ms |
コード長 | 2,061 bytes |
コンパイル時間 | 329 ms |
コンパイル使用メモリ | 87,184 KB |
実行使用メモリ | 100,640 KB |
最終ジャッジ日時 | 2023-09-11 00:16:22 |
合計ジャッジ時間 | 11,918 ms |
ジャッジサーバーID (参考情報) |
judge12 / 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 | 119 ms
76,644 KB |
testcase_01 | AC | 120 ms
76,748 KB |
testcase_02 | AC | 120 ms
77,056 KB |
testcase_03 | AC | 154 ms
80,704 KB |
testcase_04 | AC | 150 ms
80,604 KB |
testcase_05 | AC | 160 ms
80,836 KB |
testcase_06 | AC | 149 ms
80,712 KB |
testcase_07 | AC | 149 ms
80,624 KB |
testcase_08 | AC | 151 ms
80,540 KB |
testcase_09 | AC | 156 ms
80,952 KB |
testcase_10 | AC | 122 ms
77,052 KB |
testcase_11 | AC | 121 ms
76,752 KB |
testcase_12 | AC | 122 ms
76,912 KB |
testcase_13 | AC | 121 ms
76,868 KB |
testcase_14 | AC | 121 ms
76,924 KB |
testcase_15 | AC | 123 ms
76,676 KB |
testcase_16 | AC | 221 ms
98,712 KB |
testcase_17 | AC | 336 ms
98,412 KB |
testcase_18 | AC | 219 ms
98,628 KB |
testcase_19 | AC | 422 ms
100,056 KB |
testcase_20 | AC | 410 ms
99,624 KB |
testcase_21 | AC | 465 ms
100,632 KB |
testcase_22 | AC | 331 ms
98,496 KB |
testcase_23 | AC | 335 ms
98,340 KB |
testcase_24 | AC | 342 ms
98,392 KB |
testcase_25 | AC | 440 ms
100,640 KB |
testcase_26 | AC | 412 ms
99,776 KB |
testcase_27 | AC | 418 ms
100,160 KB |
testcase_28 | AC | 421 ms
99,244 KB |
testcase_29 | AC | 414 ms
99,688 KB |
testcase_30 | AC | 432 ms
100,256 KB |
testcase_31 | AC | 408 ms
99,984 KB |
ソースコード
import sys from itertools import combinations, permutations, product, accumulate, groupby from collections import defaultdict, deque, Counter from functools import reduce import heapq import bisect import math import copy sys.setrecursionlimit(10 ** 9) input = lambda: sys.stdin.readline().rstrip() ii = lambda: int(input()) mi = lambda: map(int, input().split()) li = lambda: list(mi()) INF = float("inf") MOD = 10 ** 9 + 7 # DFS # import pypyjit # pypyjit.set_param('max_unroll_recursion=-1') 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): group_members = defaultdict(list) for member in range(self.n): group_members[self.find(member)].append(member) return group_members def __str__(self): return '\n'.join(f'{r}: {m}' for r, m in self.all_group_members().items()) # 0-indexed N, M = map(int, input().split()) uf = UnionFind(M) L = [[] for i in range(N)] for i in range(N): b, c = mi() b-=1 c-=1 L[c].append(b) cnt = 0 for l in L: for b in l: if not uf.same(l[0], b): uf.union(l[0], b) cnt += 1 print(cnt)