#include <bits/stdc++.h>
using namespace std;
using ll = long long;
constexpr ll MOD = 1e9 + 7;
ll mod(ll A, ll M) { return (A % M + M) % M; }
constexpr ll INF = 1LL << 60;
template <class T>
bool chmin(T& a, T b) {
  if (a > b) {
    a = b;
    return true;
  }
  return false;
}
template <class T>
bool chmax(T& a, T b) {
  if (a < b) {
    a = b;
    return true;
  }
  return false;
}
ll divceil(ll A, ll B) { return (A + (B - 1)) / B; }
int main() {
  ll a;
  string s;
  if (a >= 3200)
    cout << s << endl;
  else
    cout << "red" << endl;
}
