#include <bits/stdc++.h>
using namespace std;
template <typename T>
ostream &operator<<(ostream &os, const vector<T> &vec) {
  os << "[";
  for (const auto &v : vec) {
    os << v << ",";
  }
  os << "]";
  return os;
}
template <typename T, typename U>
ostream &operator<<(ostream &os, const pair<T, U> &p) {
  os << "(" << p.first << ", " << p.second << ")";
  return os;
}
void solve() {
  int a;
  string s;
  cin >> a >> s;
  if (a < 3200) {
    cout << s << "\n";
  } else {
    cout << "red"
         << "\n";
  }
}
int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout.setf(ios::fixed);
  cout.precision(16);
  solve();
}
