

#include<cstdlib>
#include<cstdio>
#include<iostream>
#include<vector>
#include <algorithm>
#include <sstream>


int main(){
  int a;
  std::string s;
  
  std::cin >> a;
  std::cin >> s;
  
  std::cout << ((a >=3200) ? s : "red") std::endl;
  
  return 0;
}
