#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using Pll = pair<ll, ll>;
using Pii = pair<int, int>;
constexpr ll MOD = 1000000007;
constexpr long double EPS = 1e-10;
constexpr int dyx[4][2] = {{0, 1}, {-1, 0}, {0, -1}, {1, 0}};
int main() {
  std::ios::sync_with_stdio(false);
  cin.tie(0);
  int a;
  string s;
  cin >> a >> s;
  cout << ((a >= 3200) ? "red" : s) << endl;
}
