N,M,K=map(int,input().split())
opB=list(input().split())
op=opB.pop(0)
B=[int(i) for i in opB]
A=[int(input()) for _ in range(N)]
sum=0
for x in A:
    for y in B:
        if op=="*":
            sum+=(x*y)
        elif op=="+":
            sum+=(x+y)
print(sum%K)