n, m, k = map(int, input().split())
op, *element = input().split()
res = 0
for _ in range(n):
    num = int(input())
    if op == '+':
        res += sum([num + int(ele) for ele in element])
    elif op == '*':
        res += sum([num * int(ele) for ele in element])
print(res%k)