h,w,k=map(int,input().split())
a,*b=input().split()
b=list(map(int,b))
c=[int(input()) for _ in range(h)]
B,C=sum(b),sum(c)
if a=="+":
    print((B*h+C*w)%k)
elif a=="*":
    print(sum([i*C for i in b])%k)