#include <bits/stdc++.h>
using namespace std;
long long num[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
bool uru(long long checkyear) {
  if (checkyear % 4 == 0) {
    if (checkyear % 100 != 0 || checkyear % 400 == 0) return true;
  }
  return false;
}
long long gcd(long long x, long long y) { return y ? gcd(y, x % y) : x; }
bool pairCompare(const pair<long long, long long>& firstElof,
                 const pair<long long, long long>& secondElof) {
  if (firstElof.second != secondElof.second)
    return firstElof.second > secondElof.second;
  else
    return firstElof.first < secondElof.first;
}
signed main() {
  long long x = 0, y = 0, z = 0, w = 0, n = 0, m = 0, a = 0, b = 0;
  string s;
  std::vector<long long> v;
  std::cin >> x >> s;
  if (a >= 3200)
    std::cout << s << '\n';
  else
    std::cout << "red" << '\n';
}
