ok

#include<iostream>
using namespace std;
int main(){
    int a,b,c,d;cin>>a>>b>>c>>d;
    if(a==b&&a==c&&a==d&&b==a&&b==c&&b==d&&c==a&&c==b&&c==d&&d==a&&d==b&&d==c){
        cout<<"square";
    }
    else cout<<"rectangle";
    return 0;
}