题解

#include<bits/stdc++.h>
#define ll long long                                                        //防伪标识
#define MAXN 1005
#define maxn 10005
#define MAXM 10000
#define maxm 1000005
using namespace std;
int a[5];
int main(){
	for(int i = 1;i<=4;i++)
		cin>>a[i];
	sort(a+1,a+5);
	if(a[1] == a[4]) cout<<"square";
	else cout<<"rectangle";
	return 0;
}