#include <bits/stdc++.h>
using namespace std;
template <class T>
bool uin(T &a, T b) {
  return a > b ? (a = b, true) : false;
}
template <class T>
bool uax(T &a, T b) {
  return a < b ? (a = b, true) : false;
}
const long long MOD = 1e9 + 7, INF = 1e18;
int32_t main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  cout.precision(10);
  cout << fixed;
  int n;
  string s;
  cin >> n >> s;
  if (n < 3200)
    cout << "red" << endl;
  else
    cout << s << endl;
  return 0;
}
