#include <bits/stdc++.h>
using namespace std;
int main() {
  int x, y;
  cin >> x >> y;
  int m = 0;
  while (x * 100 + y * 10 >= 220) {
    int kx, ky;
    if (m % 2 == 0) {
      kx = min(2, x);
      x -= kx;
      ky = (220 - 100 * kx) / 10;
      y -= ky;
      if (y < 0) break;
    } else {
      if (y >= 22)
        ky = 22;
      else if (y >= 12)
        ky = 12;
      else
        ky = 2;
      y -= ky;
      if (y < 0) break;
      kx = (220 - ky * 10) / 100;
      x -= kx;
      if (x < 0) break;
    }
    m++;
  }
  if (m % 2 == 1) {
    cout << "Ciel\n";
  } else
    cout << "Hanako\n";
  return 0;
}
