#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define mod 1000000007�
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	ll a;
	string str;
	cin>>a>>str;
	if(a<3200)
	cout<<"red";
	else
	cout<<s;
	return 0;
}
