static void Main(string[] args)
{
string[] input = Console.ReadLine().Split(' ');
int hundreds = int.Parse(input[0]);
int tens = int.Parse(input[1]);
bool ciel = true;
while (hundreds >= 0 && tens >= 0)
{
if (ciel)
{
if (hundreds >= 2 && tens >= 2)
{
ciel = !ciel;
hundreds -= 2;
tens -= 2;
}
else if (hundreds >= 1 && tens >= 12)
{
ciel = !ciel;
hundreds -= 12;
tens -= 12;
}
else if (hundreds == 0 && tens >= 22)
{
ciel = !ciel;
tens -= 22;
}
else
break;
}
else
{
if (tens >= 22)
{
ciel = !ciel;
tens -= 22;
}
else if (tens >= 12 && hundreds >= 1)
{
ciel = !ciel;
tens -= 12;
hundreds--;
}
else if (tens >= 2 && hundreds >= 2)
{
ciel = !ciel;
tens -= 2;
hundreds -= 2;
}
else
break;
}
}
if(ciel)
Console.WriteLine("hanako");
else
Console.WriteLine("Ciel");
Console.ReadLine();
}