救救我，并查集模板都不会打了QAQ

看看我哪里错了呗QAQ

#include<bits/stdc++.h>
using namespace std;
int n,m;
const int MAXX=200005;
int z[MAXX] ,x[MAXX],y[MAXX],fa[MAXX];
int getf(int need){
    if(fa[need]=need){
        return need;
    }
    fa[need]==getf(fa[need]);
    return fa[need];
}

bool find(int a,int b){
    int fa=getf(a);
    int fb=getf(b);
    if(fa==fb){
        return true;
    }
    return false;
}
void merge(int x,int y){
    if(!find(x,y)){
        fa[y]=fa[x];
    } 
    return ;
}
int main()
{
    cin>>n>>m;
    for(int i=1;i<=m;i++){
        cin>>z[i]>>x[i]>>y[i];
         if(z[i]==1){
            merge(x[i],y[i]);
         }else{
            if(find(x[i],y[i])){
                cout<<"Y"<<endl;
             }else{
                cout<<"N"<<endl;
             }
         }
    }

 } 

输入

 4 7
2 1 2
1 1 2
2 1 2
1 3 4
2 1 4
1 2 3
2 1 4

输出

N
N
N
N