#include<iostream>
#include<conio.h>
#include<cstdio>
using namespace std;
int main()
{
    int a;

     char s[11];
    cin>>a;

    cin.ignore();
    cin.getline(s,11);
    if(2800<=a&&a<=5000)
    {
        if(a>=3200)
            cout<<s;
        else
            cout<<"red";
    }


}