from operator import add, mul
import sys
input = sys.stdin.readline
sys.setrecursionlimit(10 ** 7)

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

if op == "+":
    ans = sum(A) * m % k + sum(B) * n % k
    print(ans % k)
else:
    ans = sum(A) * sum(B) % k
    print(ans)