#include <iostream>
#include <algorithm>
#include <string>
#include <math.h>
#include <numeric>
#include <boost/math/constants/constants.hpp>
#include <boost/math/common_factor_rt.hpp>

using namespace std;
#define ll long long
#define rep(i, n) for(int i = 0;i < n;i++)
#define FOR(i, n, m) for(int i=n; i<m; ++i)

int main(){
  ll N;
  cin >> N;
  string S;
  cin >> S;
  
  if(N>=3200) cout << "red" << endl;
  else cout << S << endl;
  //cout << ans << endl;
}