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青い記憶 #66

Open xjzsq opened 5 years ago

xjzsq commented 5 years ago

http://www.xjdesyxx.top/2018/02/21/unionfind/

xjzsq commented 5 years ago

勘误

find函数应该写成： 

inline int find(int a)
{
    if(fa[a]!=a)return fa[a]=find(fa[a]);
    return fa[a];
}

不然没有路径压缩的效果...