import sys
readline = sys.stdin.readline

N, M, K = map(int, readline().split())
op, *A = readline().strip().split()
A = [int(a) for a in A]
B = [int(readline()) for _ in range(N)]
resa = sum(A)%K
resb = sum(B)%K
if op == '+':
    print((resa*N+resb*M)%K)
else:
    print(resa*resb%K)