#include "bits/stdc++.h"

using namespace std;
typedef long long ll;
#define rep(i, j, n) for (int i = j; i < n; i++)
#define out(ans) cout << ans << endl;
const long long mod = 1e9 + 7;

int main(){

  int a;cin>>a;
  string s;cin>>s;

  if(a>=3200)out(s);
  else out("red");

  return 0;
}
