#include <bits/stdc++.h>
using namespace std;
template <typename T>
ostream& operator<<(ostream& os, vector<T>& vec) {
  for (int i = 0; i < vec.size(); i++) {
    os << vec[i] << (i + 1 == vec.size() ? "" : " ");
  }
  return os;
}
int SumDigitValues(int x) {
  int sum = 0;
  while (x) {
    sum += x % 10;
    x = x / 10;
  }
  return sum;
}
int Factorial(int n) {
  if (n < 0) return 0;
  if (n == 0) return 1;
  return n * Factorial(n - 1);
}
int factorial(int n) {
  if (n > 1) {
    return n * factorial(n - 1);
  } else {
    return 1;
  }
}
int main() {
  int a;
  string s;
  if (a >= 3200) {
    cout << s << endl;
  } else {
    cout << "red" << endl;
  }
}
