#include <bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector")
using namespace std;
template <typename T1, typename T2>
ostream& operator<<(ostream& out, pair<T1, T2> P) {
  out << '(' << P.first << ',' << P.second << ')';
  return out;
}
template <typename T>
ostream& operator<<(ostream& out, vector<T> V) {
  for (int i = 0; i < ((int)((int)V.size())); i++)
    out << V[i] << ((i != ((int)V.size()) - 1) ? " " : "");
  return out;
}
const long long maxn = 300005;
const long long maxlg = 20;
const long long INF64 = 1e18;
const int INF = 0x3f3f3f3f;
const long long MOD = long long(1e9 + 7);
const long double PI = acos(-1);
const long double eps = 1e-9;
long long mypow(long long a, long long b) {
  long long res = 1LL;
  while (b) {
    if (b & 1) res = res * a % MOD;
    a = a * a % MOD;
    b >>= 1;
  }
  return res;
}
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int a;
  string s;
  if (a < 3200)
    cout << "red";
  else
    cout << s;
  return 0;
}
