結果
| 問題 |
No.1054 Union add query
|
| コンテスト | |
| ユーザー |
terasa
|
| 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])
terasa