N, M, K = map(int, input().split())

B = input().split()
op = B[0]

B = sum([int(B[i]) for i in range(1, M + 1)])

A = sum([int(input()) for i in range(N)])

if op == '+':
    print((B * N + A * M) % K)
    
else:
    print(B * A % K)