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)]

ans = 0

for a in A:
    for b in B:
        if op == "+":
            ans += a + b
        elif op == "*":
            ans += a * b
        ans %= k

print(ans)