結果
問題 | No.1390 Get together |
ユーザー | hiragn |
提出日時 | 2022-11-29 18:26:48 |
言語 | Python3 (3.12.2 + numpy 1.26.4 + scipy 1.12.0) |
結果 |
AC
|
実行時間 | 1,065 ms / 2,000 ms |
コード長 | 2,307 bytes |
コンパイル時間 | 249 ms |
コンパイル使用メモリ | 13,056 KB |
実行使用メモリ | 55,656 KB |
最終ジャッジ日時 | 2024-04-16 12:02:19 |
合計ジャッジ時間 | 19,420 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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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 | 35 ms
10,880 KB |
testcase_01 | AC | 34 ms
11,008 KB |
testcase_02 | AC | 33 ms
11,008 KB |
testcase_03 | AC | 54 ms
11,776 KB |
testcase_04 | AC | 46 ms
11,264 KB |
testcase_05 | AC | 50 ms
11,520 KB |
testcase_06 | AC | 46 ms
11,392 KB |
testcase_07 | AC | 44 ms
11,264 KB |
testcase_08 | AC | 45 ms
11,392 KB |
testcase_09 | AC | 52 ms
11,776 KB |
testcase_10 | AC | 31 ms
11,008 KB |
testcase_11 | AC | 31 ms
11,008 KB |
testcase_12 | AC | 31 ms
11,008 KB |
testcase_13 | AC | 31 ms
11,008 KB |
testcase_14 | AC | 31 ms
11,136 KB |
testcase_15 | AC | 30 ms
11,008 KB |
testcase_16 | AC | 909 ms
41,392 KB |
testcase_17 | AC | 888 ms
22,016 KB |
testcase_18 | AC | 912 ms
55,656 KB |
testcase_19 | AC | 1,061 ms
40,760 KB |
testcase_20 | AC | 1,043 ms
27,288 KB |
testcase_21 | AC | 1,048 ms
27,576 KB |
testcase_22 | AC | 1,017 ms
42,792 KB |
testcase_23 | AC | 1,027 ms
42,796 KB |
testcase_24 | AC | 992 ms
42,928 KB |
testcase_25 | AC | 1,051 ms
41,408 KB |
testcase_26 | AC | 1,058 ms
41,656 KB |
testcase_27 | AC | 1,046 ms
41,412 KB |
testcase_28 | AC | 1,065 ms
41,528 KB |
testcase_29 | AC | 1,049 ms
41,396 KB |
testcase_30 | AC | 1,039 ms
41,640 KB |
testcase_31 | AC | 1,040 ms
41,644 KB |
ソースコード
from collections import defaultdict class UnionFind: n = 1 parent_or_size = [-1 for i in range(n)] def __init__(self, n0): self.n = n0 self.parent_or_size = [-1 for _ in range(n0)] def merge(self, a, b): assert 0 <= a < self.n, "0<=a<n,a={0},n={1}".format(a, self.n) assert 0 <= b < self.n, "0<=b<n,b={0},n={1}".format(b, self.n) x = self.leader(a) y = self.leader(b) if x == y: return x if -self.parent_or_size[x] < -self.parent_or_size[y]: x, y = y, x self.parent_or_size[x] += self.parent_or_size[y] self.parent_or_size[y] = x return x def same(self, a, b): assert 0 <= a < self.n, "0<=a<n,a={0},n={1}".format(a, self.n) assert 0 <= b < self.n, "0<=b<n,b={0},n={1}".format(b, self.n) return self.leader(a) == self.leader(b) def leader(self, a): assert 0 <= a < self.n, "0<=a<n,a={0},n={1}".format(a, self.n) if self.parent_or_size[a] < 0: return a self.parent_or_size[a] = self.leader(self.parent_or_size[a]) return self.parent_or_size[a] def size(self, a): assert 0 <= a < self.n, "0<=a<n,a={0},n={1}".format(a, self.n) return -self.parent_or_size[self.leader(a)] def groups(self): leader_buf = [0 for _ in range(self.n)] group_size = [0 for _ in range(self.n)] for i in range(self.n): leader_buf[i] = self.leader(i) group_size[leader_buf[i]] += 1 result = [[] for _ in range(self.n)] for i in range(self.n): result[leader_buf[i]].append(i) result2 = [] for i in range(self.n): if len(result[i]) > 0: result2.append(result[i]) return result2 def main(): n, m = map(int, input().split()) graph = defaultdict(list) for _ in range(n): b, c = map(int, input().split()) b -= 1 c -= 1 graph[b].append(c) uf = UnionFind(n) for v in graph.values(): for x, y in zip(v, v[1:]): uf.merge(x, y) cnt = [-1] * n for v in graph.values(): cnt[uf.leader(v[0])] += 1 ans = sum([x for x in cnt if x >= 1]) print(ans) if __name__ == "__main__": main()