没写路径压缩,tle

P3367 【模板】并查集

将fd函数中的 ``` return fd(a[x]); ``` 改为 ``` return a[x]=fd(a[x]); ```
by angiing1222 @ 2023-11-12 11:10:04


@[angiing1222](/user/718025) 谢
by zc_zmb @ 2023-11-12 11:27:37


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