def taumBday(b, w, bc, wc, z):
    # Write your code here
    if bc>wc+z:
        x=(w+b)*wc+b*z
        return x
    elif wc>bc+z:
        y=(b+w)*bc+w*z
        return y
    else:
        z=b*bc+w*wc
        return z