#988
import collections
N,M,K = map(int,input().split())
B = input()
op = B[0]
B = list(map(int,B[1:].split()))

A = [None]*N
for i in range(N):
    A[i] = int(input())

if op == "+":
    print((N*sum(B)+M*sum(A))%K)
else:
    ans = 0
    sb = sum(B)
    for a in A:
        ans += a*sb
    print(ans%K)