#include <bits/stdc++.h>
using namespace std;
class Handan {
 public:
  int a;
  char s[5];
};
int main() {
  Handan handan;
  strcpy(handan.s, "pink");
  cin >> handan.a;
  cout << handan.s;
  if (handan.a >= 3200) {
    cout << handan.s;
    return 0;
  } else {
    cout << "red";
  }
  return 0;
}
