n,m,k = map(int,input().split())
B = list(map(str, input().split()))
op = B[0]
B = [int(i) for i in B[1:]]
A = [int(input()) for _ in range(n)]
if op=='+':
    print((sum(B)*n + sum(A)*m)%k)
else:
    ret = 0
    sa = sum(A)%k
    for b in B:
        ret += (b*sa)%k
    print(ret%k)