N,M,K = map(int, input().split())
B = [i for i in input().split()]
op = B.pop(0)
A = [int(input()) for _ in range(N)]
for i in range(M):
    B[i] = int(B[i])

C = [[0]*M for _ in range(N)]
if op == "+":
    ans = (sum(A)*M + sum(B)*N) % K
else:
    b = sum(B)%K
    ans = 0
    for i in range(N):
        ans += A[i]*b
        ans %= K
print(ans)