#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b;
  scanf("%d%d", &a, &b);
  int Sakura = min(a / 2, b / 24);
  a -= Sakura * 2;
  b -= Sakura * 24;
  Sakura = 0;
  Sakura = min(a, b / 34);
  a -= Sakura;
  b -= Sakura * 34;
  Sakura = 0;
  Sakura = min(a / 3, b / 14);
  a -= Sakura * 3;
  b -= Sakura * 14;
  Sakura = min((a * 100 + b * 10) / 220, b / 2);
  if (Sakura & 1)
    puts("Ciel");
  else
    puts("Hanako");
}
