#include <bits/stdc++.h>
#pragma GCC optimize("O3")
using namespace std;
using ll = long long;
using pii = pair<ll, ll>;
ll gcd(ll a, ll b) { return b == 0 ? a : gcd(b, a % b); }
ll lcm(ll a, ll b) { return a / gcd(a, b) * b; }
ll fpow(ll b, ll p) {
  if (p == 0) return 1;
  ll h = fpow(b, p / 2);
  if (p % 2) return h * b % (ll)(1e17) * h % (ll)(1e17);
  return h * h % (ll)(1e17);
}
int32_t main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  ll n;
  cin >> n;
  string s;
  cin >> s;
  if (n < 3200)
    cout << s << "\n";
  else
    cout << "red\n";
  return 0;
}
