#include<iostream>
#include<vector>
#include<algorithm>
#include<iomanip>
#include<cmath>
#include<string>
#include<cstdlib>

using namespace std;

int main()
{
  int N;
  cin >> N;
  string S;
  cin >> S;

  if(a>3199)
    cout << S << endl;
  else
    cout << "red" << endl;


  return 0;
}

