結果
問題 |
No.1054 Union add query
|
ユーザー |
![]() |
提出日時 | 2022-05-26 02:07:29 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 867 ms / 2,000 ms |
コード長 | 2,097 bytes |
コンパイル時間 | 312 ms |
コンパイル使用メモリ | 82,140 KB |
実行使用メモリ | 146,876 KB |
最終ジャッジ日時 | 2024-09-20 14:55:00 |
合計ジャッジ時間 | 6,007 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 8 |
ソースコード
import sys import pypyjit import itertools import heapq import math from collections import deque, defaultdict, Counter import bisect input = sys.stdin.readline sys.setrecursionlimit(10 ** 6) pypyjit.set_param('max_unroll_recursion=-1') class UnionFind: def __init__(self, N): self.N = N self.par = [-1] * N self.members = [[i] for i in range(N)] self.value = [0] * N self.lazy = [0] * N def find(self, x): if self.par[x] < 0: return x else: self.par[x] = self.find(self.par[x]) return self.par[x] def unite(self, x, y): x = self.find(x) y = self.find(y) if x == y: return False if x > y: x, y = y, x for i in self.members[y]: self.value[i] += self.lazy[y] - self.lazy[x] self.lazy[y] = 0 self.par[x] += self.par[y] self.par[y] = x self.members[x] += self.members[y] return True def same(self, x, y): return self.find(x) == self.find(y) def size(self, x): return -self.par[self.find(x)] def roots(self): return [i for i in range(self.N) if self.par[i] < 0] def index_lt(a, x): 'return largest index s.t. A[i] < x or -1 if it does not exist' return bisect.bisect_left(a, x) - 1 def index_le(a, x): 'return largest index s.t. A[i] <= x or -1 if it does not exist' return bisect.bisect_right(a, x) - 1 def index_gt(a, x): 'return smallest index s.t. A[i] > x or len(a) if it does not exist' return bisect.bisect_right(a, x) def index_ge(a, x): 'return smallest index s.t. A[i] >= x or len(a) if it does not exist' return bisect.bisect_left(a, x) N, Q = map(int, input().split()) uf = UnionFind(N) for _ in range(Q): t, a, b = map(int, input().split()) if t == 1: a -= 1 b -= 1 uf.unite(a, b) elif t == 2: a -= 1 p = uf.find(a) uf.lazy[p] += b else: a -= 1 p = uf.find(a) print(uf.value[a] + uf.lazy[p])