#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
using P = pair<int,int>;

int main(){
  int n;
  cin >> n;
  string s;
  cin >> s;
  if(n >= 3200) cout << s << endl;
  ekse cout << "red" << endl;
}
