結果
| 問題 |
No.1054 Union add query
|
| コンテスト | |
| ユーザー |
WSKR
|
| 提出日時 | 2020-09-23 23:06:59 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 2,298 bytes |
| コンパイル時間 | 297 ms |
| コンパイル使用メモリ | 82,416 KB |
| 実行使用メモリ | 275,024 KB |
| 最終ジャッジ日時 | 2024-06-28 04:40:19 |
| 合計ジャッジ時間 | 5,534 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | TLE * 1 -- * 7 |
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)
Uni.union(A, B)
if Uni.find(A) == A:
# A's member was smaller
#merging
for node in members[A]:
node_weight[node] += root_weight[A]
members[A] = members[A] + members[B]
for node in members[B]:
node_weight[node] += root_weight[B]
root_weight[A] = 0
else:
for node in members[B]:
node_weight[node] += root_weight[B]
members[B] = members[A] + members[B]
for node in members[A]:
node_weight[node] += root_weight[A]
root_weight[B] = 0
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()
WSKR