#include<vector>
#include<iostream>
#include<algorithm>
#include<functional>
#include<string>
#include<limits.h>
#include<cmath>
#include<queue>
#define rep(i,n) for (int i=0; i<n; i++)
using namespace std;
typedef long long ll;

ll gcd(ll a,ll b){
  ll r;
  while ((r=a%b)){a=b;b=r;}
  return b;
}

int main(){

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

  return 0;
}
