#include <bits/stdc++.h>
#define int long long
#define double long double
const int INF = (int)1e18 + 18;
const int maxn = (int) 1e6 + 6; 
using namespace std;

int a;
string s;

signed main(){
  cin >> a > s;
  if(a >= 3200) cout << "red" << endl;
  else cout << s << endl;
  
    return 0;
}