#include <bits/stdc++.h>
#define rep(i,n)for(int i=0;i<(n);i++)
using namespace std;
typedef long long ll;

const int MOD=1000000007;
const int INF=0x3f3f3f3f;
const ll INFL=0x3f3f3f3f3f3f3f3f;

int main() {
  ll a; cin>>a;
  string s; cin>>s;
  if(a>=3200) cout<<s<<endl;
  else cout<<"red"<<Endl;
  
}