#include <bits/stdc++.h>
using namespace std;
int main() {
  int a;
  char s[5000];
  int count = 0;
  for (int i = 0; i < strlen(s); i++) {
    if (s[i] == 'a') count++;
  }
  if (count >= 3200)
    cout << s;
  else
    cout << "red";
  return 0;
}
