結果
| 問題 |
No.2319 Friends+
|
| コンテスト | |
| ユーザー |
lam6er
|
| 提出日時 | 2025-04-16 15:31:07 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 1,673 bytes |
| コンパイル時間 | 349 ms |
| コンパイル使用メモリ | 81,792 KB |
| 実行使用メモリ | 162,008 KB |
| 最終ジャッジ日時 | 2025-04-16 15:36:15 |
| 合計ジャッジ時間 | 6,134 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | TLE * 1 -- * 44 |
ソースコード
import sys
from collections import defaultdict
def main():
input = sys.stdin.read().split()
ptr = 0
N, M = int(input[ptr]), int(input[ptr+1])
ptr += 2
current_world = [0] * (N + 1) # 1-based
for i in range(1, N+1):
current_world[i] = int(input[ptr])
ptr += 1
friends = [[] for _ in range(N+1)]
for _ in range(M):
A = int(input[ptr])
B = int(input[ptr+1])
ptr += 2
friends[A].append(B)
friends[B].append(A)
# Initialize friends_in_world
friends_in_world = [defaultdict(int) for _ in range(N+1)]
for X in range(1, N+1):
for F in friends[X]:
w = current_world[F]
friends_in_world[X][w] += 1
Q = int(input[ptr])
ptr += 1
for _ in range(Q):
X = int(input[ptr])
Y = int(input[ptr+1])
ptr += 2
if current_world[X] == current_world[Y]:
print("No")
continue
target_world = current_world[Y]
cnt = friends_in_world[X].get(target_world, 0)
if cnt >= 1:
print("Yes")
old_world = current_world[X]
current_world[X] = target_world
for F in friends[X]:
# Update F's friends_in_world for old_world
if friends_in_world[F][old_world] == 1:
del friends_in_world[F][old_world]
else:
friends_in_world[F][old_world] -= 1
# Update F's friends_in_world for new_world (target_world)
friends_in_world[F][target_world] += 1
else:
print("No")
if __name__ == "__main__":
main()
lam6er