#define _GLIBCXX_DEBUG
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define rep(i,N) for(int i = 0;i < (int)(N);i++)
int main(){
  int a;
  cin>>a;
  string s;
  cin>>s;
  if(a>=320) cout<<"red"<<endl;
  else cot<<s<<endl;
}
