def catAndMouse(x, y, z):
    #
    # Write your code here.
    #
    
    step1 = abs(z - x)
    step2 = abs(z - y)
    
    if step1 == step2:
        return 'Mouse C'
        
    elif step1 < step2:
        return 'Cat A'
    
    elif step2 < step1:
        return 'Cat B'