n, m, k = map(int, input().split())

b = input().split()
op = b[0]
bb = [int(x) for x in b[1:]]
a = [int(input()) for _ in range(n)]

if op == "+":
    ans = 0
    for i in range(len(bb)):
        for j in range(n):
            ans += bb[i] + a[j]
    print(ans % k)
else:
    ans = 0
    for i in range(len(bb)):
        for j in range(n):
            ans += bb[i] * a[j]
    print(ans % k)