A,B,C,X,Y = map(int,input().split())
if A + B >= 2 * C:
    if A >= 2 * C and B >= 2 * C:
        print(max(X, Y) * 2 * C)
    elif X > Y:
        print(2 * C * Y + A * (X - Y))
    else:
        print(2 * C * X + B * (Y - X))
else:
    print(X * A + Y * B)