N,M,K=map(int,input().split())
op,*B=input().split()
bsm=sum(int(s) for s in B)
sum=0
if op=='+':
    for _ in range(N):
        sum += bsm+int(input())*M
else:
    for _ in range(N):
        sum += bsm*int(input())
print(sum%K)