#include <bits/stdc++.h>
using namespace std;
using ll = long long;
ll MOD = 1e9 + 7;
ll devc(ll x, ll y) { return 1 + (x - 1) / y; }
int main() {
  cin.tie(0);
  ios::sync_with_stdio(0);
  cout << fixed << setprecision(20);
  ll N;
  cin >> N;
  string s;
  cin >> s;
  if (N >= 3200)
    cout << (s) << '\n';
  else
    cout << ('red') << '\n';
  return 0;
}
