n,m,k=map(int,input().split())
tmp=list(map(str,input().split()))
op=tmp[0]
arr1=[int(tmp[i]) for i in range(1,m+1)]
sum1=sum(arr1)
arr2=[int(input()) for i in range(n)]
sum2=sum(arr2)
ans=0
for i in range(m):
    if op=='+':
        ans+=arr1[i]*n+sum2
        ans%=k
    else:
        ans+=arr1[i]*sum2
        ans%=k
print(ans)