#include"bits/stdc++.h"
#include<boost/multi_array.hpp>
#include<boost/optional.hpp>
#include<boost/range/irange.hpp>
#include<boost/range/algorithm.hpp>
#define rep(i,n) for (int i = 0; i < (n);i++)
typedef long long ll;
using namespace std;
/*#include<boost/range/adaptors.hpp>

namespace adaptor = boost::adaptors;*/


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

int main()
{
	cin.tie(nullptr);
	ios_base::sync_with_stdio(false);
	cout << fixed << setprecision(15);
	Main();
}