n, m, k = map(int, input().split())
tmp = list(input().split())
tmp.reverse()
op = tmp.pop()

B = [int(tmp.pop()) for i in range(m)]
A = [int(input()) for i in range(n)]

b = 0
for Bi in B:
    b += Bi
    b %= k

ans = 0
for Ai in A:
    if op == "+":
        ans += Ai * m + b
    elif op == "*":
        ans += Ai * b
    ans %= k

print(ans)