N, M, K = [int(x) for x in input().split()]
C = [x for x in input().split()]
B = [int(x) for x in C[1:]]
A = [int(input()) for _ in range(N)]

ans = 0

for j in range(N):
    for i in range(M):
        if C[0] == '+':
            ans += A[j] + B[i]
            ans %= K
        else:
            ans += A[j] * B[i]
            ans %= K

print(ans % K)