n, m, k = list(map(int, input().split()))
op = list(input().split())
b = [int(op[i]) for i in range(1, m + 1)]
a = [int(input()) for i in range(n)]

if op[0] == "+":
    ans = sum(a) * m + sum(b) *n
    print(ans % k)
else:
    ans = sum(a)* sum(b)
    print(ans % k)