h,w,k=map(int,input().split())
a,*b=input().split()
b=list(map(int,b))
d=0
for _ in range(h):
    c=int(input())
    if a=="+":
        d+=sum([i+c for i in b])%k
    if a=="*":
        d+=sum([i*c for i in b])%k
print(d%k)