#include <bits/stdc++.h>
using namespace std;
int main() {
  int a;
  if (5000 > a && a >= 3200) {
    cout << "s" << endl;
  }
  if (2800 <= a && a < 3200) {
    cout << "red" << endl;
  }
  if (a == 3200) cout << "pink" << endl;
}
