n, m, k = map(int, input().split())
opb = list(map(str, input().split()))
op = opb[0]
b = [int(x) for x in opb[1:]]
a = [int(input()) for _ in range(n)]

total = 0
if op == '+':
    total += sum(a) * m % k + sum(b) * n % k
    total %= k
else:
    sumb = sum(b) % k
    suma = sum(a) % k
    total = suma * sumb % k

print(total)