#include <bits/stdc++.h>
using namespace std;
template <typename Arg1>
void ZZ(const char* name, Arg1&& arg1) {
  std::cerr << name << " = " << arg1 << "\n";
}
template <typename Arg1, typename... Args>
void ZZ(const char* names, Arg1&& arg1, Args&&... args) {
  const char* comma = strchr(names + 1, ',');
  std::cerr.write(names, comma - names) << " = " << arg1;
  ZZ(comma, args...);
}
const long long int INF = 1e18 + 7;
const long long int MAX = 1234567;
const long long int MOD = 1000000007;
void solve() {
  long long int a;
  string s;
  cin >> a >> s;
  if (a < 3200)
    cout << "red";
  else
    cout << s;
}
int32_t main() {
  long long int t;
  t = 1;
  cin.sync_with_stdio(0), cin.tie(0);
  while (t--) {
    solve();
    cout << "\n";
    ;
  }
  return 0;
}
