#include <bits/stdc++.h>
using namespace std;
template <class t, class u>
bool chmax(t& a, u b) {
  if (a < b) {
    a = b;
    return true;
  }
  return false;
}
template <class t, class u>
bool chmin(t& a, u b) {
  if (a > b) {
    a = b;
    return true;
  }
  return false;
}
template <class t, class u>
t MAX(t a, u b) {
  if (a >= b) return a;
  return b;
}
template <class t, class u>
t MIN(t a, u b) {
  if (a <= b) return a;
  return b;
}
template <class t>
int SIZE(t s) {
  return (int)s.size();
}
template <class t>
using vc = vector<t>;
template <class t>
using vvc = vc<vc<t>>;
using vvi = vc<vc<int>>;
using pi = pair<int, int>;
using vi = vc<int>;
void yes() { cout << "Yes" << endl; }
void no() { cout << "No" << endl; }
const long long INF = 1LL << 60;
int main() {
  cout << fixed << setprecision(20);
  int a;
  cin >> a;
  string s;
  cin >> s;
  if (a >= 3200)
    cout << "red" << endl;
  else
    cout << s << endl;
  return 0;
}
