#include <bits/stdc++.h>
using namespace std;
const long long mod = 1000000007;
const long long inf = mod * mod;
const long long d5 = 114514;
const double EPS = 1e-10;
const double INF = 1e+10;
const double PI = acos(-1.0);
int main() {
  int a;
  string s;
  cin >> a >> s;
  if (a >= 3200)
    cout << s << endl;
  else
    cout << "red" << endl;
}
