When I write a two-dimensional array in AtCoder, I cannot determine the cause of RE (execution time error) in some problems.

#include<bits/stdc++.h>

using namespace std;

void solve() {
    uint64_tN,Q;
    cin>>N>Q;
    vector<vector<uint64_t>>G(N+1);
    for(uint64_ti=0;i<Q;i++){
        uint64_t T, A, B;
        cin>>T>>A>>B;
        if(T==1){
            auto itr = find(G[A].begin(), G[A].end(), B);
            if(itr==G[A].end()){
                G[A].push_back(B);
            }
        }
        if(T==2){
            auto itr = find(G[A].begin(), G[A].end(), B);
            if(itr!=G[A].end()){
                G[A].erase(itr);
            }
        }
        if(T==3){
            bool AhaveB = false;
            for(uint64_tA_friend:G[A]){
                if(A_friend==B){
                    AhaveB = true;
                }
            }
            bool BhaveA = false;
            for(uint64_tB_friend:G[B]){
                if(B_friend==A){
                    BaveA = true;
                }
            }
            if(AhaveB&&BhaveA){
                cout<<"Yes"<<endl;
            } else{
                cout<<"No"<<endl;
            }
        }
    }
}

int main() {
    solve();
}