#include <bits/stdc++.h>
using namespace std;
int A, B;
int main() {
  FILE *in = stdin;
  int c, c2;
  fscanf(in, "%d%d", &A, &B);
  bool f = 0;
  while (1) {
    if (!f) {
      int fromb = 2;
      int froma = 2;
      while (A < froma) froma--, fromb += 10;
      if (B < fromb) break;
      A -= froma;
      B -= fromb;
    } else {
      int froma = 0;
      int fromb = 22;
      while (B < fromb) froma++, fromb -= 10;
      if (A < froma || fromb < 0) break;
      A -= froma;
      B -= fromb;
    }
    f = !f;
  }
  printf("%s\n", f ? "Ciel" : "Hanako");
  return 0;
}
