#include<bits/stdc++.h>
using namespace std;
int n,a[4],ans=0;
int main(){
	cin>>n;
	cin>>a[1]>>a[2]>>a[3];
	if(n<=3){
		if(a[1]<a[2] and a[1]<a[3]) ans=1;
		else if(a[2]<a[1] and a[2]<a[3]) ans=2;
		else ans=3;
	}
	if(n<=5){
		if(a[2]<a[3]) ans=2;
		else ans=3;
	}
	else ans=3;
	if(ans==1) cout<<"library";
	else if(ans==2) cout<<"comprehensive";
	else cout<<"art";
}