#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef vector<ll> vi;
typedef pair<ll,ll> pll;
typedef vector<pll> vpll;
typedef vector<vpll> vvpll;
ll mx(ll a,ll b){if(a>=b) return a;return b;}
ll mn(ll a,ll b){if(a<b) return a;return b;}
#define pb push_back
#define mp make_pair
#define M (1e9+7)
#define INF (3e18)
int main(){
	ll a;string s;
  cin>>a>>s;
  if(a>=3200)
    cout<<s<<endl;
  else
    cout"red"<<endl;
  
  return 0;
}