N, M, K = map(int, input().split())
line2 = input().split()
op = line2[0]
B = [int(x) for x in line2[1:]]
A = [int(input()) for _ in range(N)]

ans = 0
if op == '+':
    a_sum = (sum(A) % K)*M % K
    b_sum = (sum(B) % K)*N % K
    ans = (a_sum + b_sum) % K

else: # op == '*'
    a_sum = sum(A) % K
    for b in B:
        ans = (ans + a_sum*b % K) % K

print(ans)