#include <bits/stdc++.h>
using namespace std;
long long a, b, c, n, m;
int main() {
  cin >> a >> b;
  while (true) {
    if (a * 100 + b * 10 < 220 || b < 2) {
      cout << "Hanako";
      return 0;
    }
    if (a >= 2) {
      a -= 2;
      b -= 2;
    } else {
      if (a == 1) {
        a -= 1;
        b -= 12;
      } else {
        b -= 22;
      }
    }
    if (a * 100 + b * 10 < 220 || b < 2) {
      cout << "Ciel";
      return 0;
    }
    if (b >= 22) {
      b -= 22;
    } else {
      if (b >= 12) {
        a -= 1;
        b -= 12;
      } else {
        a -= 2;
        b -= 2;
      }
    }
  }
  return 0;
}
