#include <iostream>
#include "Calc.h"
#include "MInMax.h"

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