P = 998244353

n, x = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))

ans = 0

for j in range(n + 1):
    for k in range(n + 1 - j):
        ans += A[j + k] * B[j] * C[k] * pow(x, (j + k) * j * k)

print(ans % P)