N, M, K = map(int, input().split())
op, *_B = input().split()
B = [int(b) for b in _B]
A = [int(input()) for _ in range(N)]

if op == '+':
    ans = sum(A) * M + sum(B) * N
    ans %= K
else:
    ans = sum(A) * sum(B) % K

print(ans)