#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<ll, ll>;
const ll MOD = 1e9 + 7;
const ll INF = (1ll << 60);
int main(void) {
  int a;
  string s;
  if (a >= 3200) {
    cout << s << endl;
  } else {
    cout << "red" << endl;
  }
}
