from operator import add, mul
def solve():
    n, m, k = map(int, input().split())
    op, *B = input().split()
    f = add if op == "+" else mul
    B = list(map(int, B))
    A = list(int(input()) for _ in range(n))
    ans = 0
    for i in range(n):
        for j in range(m):
            ans += f(A[i], B[j])
    print(ans % k)
solve()