const int N=120;
int father[N];
int rank1[N];
void init(int Size)
{
    for(int i=1;i<=Size;++i)
        father[i]=i,rank1[i]=0;

}
int Find(int x)
{
    while(x!=father[x])
        x=father[x];
    return x;
}
bool Union(int x,int y)
{
    int fx,fy;
    fx=Find(x),fy=Find(y);
    if(fx==fy)
        return false;
    else if(rank1[fx]>=rank1[fy])
    {
        father[fy]=fx;
        rank1[fx]+=rank1[fy];
    }
    else
    {
        father[fx]=fy;
        rank1[fy]+=rank1[fx];
    }
    return true;
}