#include <iostream>
#include <cstdio>
#include <cmath>
#include <string>
#include <cstring>
#include <algorithm>
#include <iomanip>
#include <cstdlib>
#include <cctype>
#define ll long long
#define PI 3.14159265358979323846
using namespace std;
const int maxn = 1e6+7;

int main(){
	int a;
	string s;
	cin>>a>>s;
	if(a>=3200){
		cout<<s<<endl;
	}
	else{
		cout<<"red"<<endl;
	}
	return 0;
}
