def f(a, b):
    return [
        a[0] * b[0] + a[1] * b[2],
        a[0] * b[1] + a[1] * b[3],
        a[2] * b[0] + a[3] * b[2],
        a[2] * b[1] + a[3] * b[3],
    ]

a = [int(x) for x in input().split()]
a.extend([int(x) for x in input().split()])
print(f(a, f(a, a)))