#include <bits/stdc++.h>
using namespace std;
int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};
int jyo(int x, int y) {
  int ans = 1;
  for (int i = 0; i < y; i++) {
    ans *= x;
  }
  return ans;
}
int main() {
  int a;
  string s;
  cin >> a >> s;
  if (a >= 3200)
    cout << s;
  else
    cout << 'red';
  cout << endl;
  return 0;
}
