N,M,K=map(int,input().split())
B=list(input().split())
A=[int(input()) for i in range(N)]

if B[0]=="+":
    print((sum(A)*M+sum(list(map(int,B[1:])))*N)%K)
else:
    print(sum(A)*sum(list(map(int,B[1:])))%K)