#include <iostream>
#include <string>
#include <vector>
#include <cmath>
#include <algorithm>
using namespace std;

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