#include <bits/stdc++.h>
using namespace std;
int main() {
  char str[100];
  int a;
  char r;
  cin >> a;
  cin >> str;
  if (a >= 3200) {
    for (int i = 0; str[i] != '\0'; i++) {
      cout << str[i] << "\n";
    }
  } else {
    cout << "red"
         << "\n";
  }
  return 0;
}
