#include <bits/stdc++.h>
using namespace std;
int main() {
  long long int n, m, d, r;
  cin >> n >> m;
  long long int ans = 1, cnt = 0;
  while (1) {
    if (ans % 2) {
      if (m >= 2 && n >= 2) {
        m -= 2;
        n -= 2;
      } else if (n >= 1 && m >= 12) {
        n -= 1;
        m -= 12;
      } else if (m >= 22) {
        m -= 22;
      } else
        break;
    } else {
      if (m >= 22) {
        m -= 22;
      } else if (n && m >= 12) {
        n -= 1;
        m -= 12;
      } else if (n >= 2 && m >= 2) {
        m -= 2;
        n -= 2;
      } else
        break;
    }
    ans++;
  }
  if (ans % 2 == 0)
    cout << "Ciel" << endl;
  else
    cout << "Hanako" << endl;
}
