#include<bits/stdc++.h>
#define rep(i,n)for(int i=0;i<n;++i)
#include string
using namespace std;

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