# yukiko No.988
n,m,k=map(int,input().split())
b=list(map(str,input().split()))
c=b.pop(0)
a=[int(input()) for i in range(n)]
d=[]
for bb in b:
    d.append(int(bb))
s=sum(d)
ans=0
for i in range(n):
    if c=='+':
        ans+=a[i]*m+s
        ans%=k
    else:
        ans+=a[i]*s
        ans%=k
print(ans%k)