n,m,k=map(int,input().split())
c=list(map(str,input().split()))
a=[0]*(n)
for i in range(n):
    a[i]=int(input())
op=c[0]
b=[0]*m
for i in range(m):
    b[i]=int(c[i+1])
if op=='+':
    print((sum(a)*m+sum(b)*n)%k)
else:
    print(sum(a)*sum(b)%k)