#include <bits/stdc++.h>
using namespace std;
int main(int argc, char** argv) {
  int y, x;
  cin >> x >> y;
  int turn = 0;
  while (true) {
    int H = 0, T = 0;
    if (turn == 0) {
      H = min(2, x);
      T = (220 - H * 100) / 10;
    } else {
      if (y >= 22) {
        T = 22;
        H = 0;
      } else if (y >= 12) {
        T = 12;
        H = 1;
      } else {
        T = 2;
        H = 2;
      }
    }
    if (H > x || T > y) break;
    turn ^= 1;
    x -= H;
    y -= T;
  }
  if (turn)
    cout << "Ciel" << endl;
  else
    cout << "Hanako" << endl;
  return 0;
}
