Code-Forces/A_Square.cpp at main · anas20023/Code-Forces · GitHub

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#include <bits/stdc++.h>
using namespace std;

int main()
{
    int t;cin>>t;
    while(t--){
        int a,b,c,d;
        cin>>a>>b>>c>>d;
        if(a==b && b==c && c==d && d==a){
            cout<<"YES"<<endl;
        }
        else{
            cout<<"NO"<<endl;
        }
    }
    return 0;
}