测试代码片高亮

#include<bits/stdc++.h>
#define N 30005
using namespace std;
int father[N],to_root[N],size[N];
inline int getfather(int x)
{
    if(father[x]==x)    return x;
    int ff=father[x];
    father[x]=getfather(father[x]);
    to_root[x]+=to_root[ff];
    return father[x];
}