#include <bits/stdc++.h>
using namespace std;
unsigned long long int power(unsigned long long int x,
                             unsigned long long int y) {
  unsigned long long int temp;
  if (y == 0) return 1;
  temp = power(x, y / 2);
  if (y % 2 == 0)
    return temp * temp;
  else
    return x * temp * temp;
}
unsigned long long int gcdFactor(unsigned long long int n) {
  unsigned long long int tmp = n, res = 0;
  for (unsigned long long int i = 1; i * i <= tmp; i++) {
    if (tmp % i == 0) {
      res++;
      if (tmp / i != i) res++;
    }
  }
  return res;
}
void solution(void);
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  solution();
  return 0;
}
void solution() {
  int a;
  string st;
  cin >> a;
  cin >> st;
  if (a < 3200)
    cout << st;
  else
    cout << "red";
}
