#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); ++i)
using namespace std;
typedef long long ll;


int main() {
  string a;
  int s;
  cin >> a >> s;
  if (a>=3200) {
    cout << s << endl;
  } else {
    cout << "red" << endl;
  }
  return 0;
}