#include <bits/stdc++.h>
using namespace std;
int mid(int a, int b, int c) {
  return a + b + c - max(max(a, b), c) - min(min(a, b), c);
}
int samecount(string S) {
  int A = 0;
  for (int i = 0; i < S.size(); i++) {
    int QA = 1;
    for (int j = i; j < S.size() - 1; j++) {
      if (S.at(j) == S.at(j + 1)) {
        QA++;
      }
      if (S.at(j) != S.at(j + 1)) {
        break;
      }
    }
    A = max(QA, A);
  }
  return A;
}
int main() {
  int a;
  string s;
  cin >> a >> s;
  if (a <= 3200) {
    cout << s << endl;
  } else
    cout << "red" << endl;
}
