n, m, k = map(int, input().split())
line = input().split()
op = line[0]
B = list(map(int, line[1:]))
A = [int(input()) for _ in range(n)]

a, b = 0, 0
for i in range(n):
    a = (a + A[i]) % k
for i in range(m):
    b = (b + B[i]) % k
ans = -1
if op == '+':
    ans = a * m + b * n
else:
    ans = a * b

print(ans % k)