結果
問題 | No.1054 Union add query |
ユーザー | WSKR |
提出日時 | 2020-09-23 23:30:21 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 826 ms / 2,000 ms |
コード長 | 2,132 bytes |
コンパイル時間 | 164 ms |
コンパイル使用メモリ | 81,920 KB |
実行使用メモリ | 194,176 KB |
最終ジャッジ日時 | 2024-06-28 04:40:44 |
合計ジャッジ時間 | 6,313 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
(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 | 38 ms
52,484 KB |
testcase_01 | AC | 40 ms
52,064 KB |
testcase_02 | AC | 41 ms
52,224 KB |
testcase_03 | AC | 752 ms
152,676 KB |
testcase_04 | AC | 826 ms
194,176 KB |
testcase_05 | AC | 604 ms
142,900 KB |
testcase_06 | AC | 489 ms
168,448 KB |
testcase_07 | AC | 447 ms
167,952 KB |
testcase_08 | AC | 486 ms
167,872 KB |
testcase_09 | AC | 552 ms
185,048 KB |
testcase_10 | AC | 459 ms
183,424 KB |
ソースコード
#union and query import sys class UnionFind(): def __init__(self, n): self.n = n self.parents = [-1] * (n+1) 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) input = sys.stdin.readline def main(): N, Q = map(int, input().split()) Uni = UnionFind(N) members = [[i] for i in range(N+1)] root_weight = [0 for i in range(N+1)] node_weight = [0 for i in range(N+1)] command = [tuple(map(int, input().split())) for i in range(Q)] for demand, a, b in command: if demand == 1: #unite if Uni.same(a, b): pass else: A, B = Uni.find(a), Uni.find(b) x, y = Uni.size(A), Uni.size(B) Uni.union(A, B) if Uni.find(A) == A: # A's member was bigger #merging assert x >= y for x in members[B]: members[A].append(x) for node in members[B]: node_weight[node] += root_weight[B] - root_weight[A] else: assert x <= y for x in members[A]: members[B].append(x) for node in members[A]: node_weight[node] += root_weight[A] - root_weight[B] elif demand == 2: A = Uni.find(a) root_weight[A] += b else: A = Uni.find(a) print(root_weight[A] + node_weight[a]) return if __name__ == "__main__": main()