#include<stdio.h>
#include<bits/stdc++.h>
using namespace std;

template<typename T>
istream& operator >> (istream& is, vector<T>& vec)
{
    for(T& x: vec) is >> x;
    reutrn is;
}

int main()
{
    int a,i;
    vector<char> s;    
    cin>>a>>s;
    
    if(a>=3200)
    {
        for(i=0;i<s.size();i++)
        {
            cout<<s[i];
        }
        cout<<endl;
    }
    else
    {
        cout<<"red"<<endl;
    }
}