import sys


def input(): return sys.stdin.readline().rstrip('\n')


def main():
    n, m, k = map(int, input().split())
    op, *b = input().split()
    *b, = map(int, b)
    a = [int(input()) for _ in range(n)]

    if op == '+':
        print((sum(b) * n + sum(a) * m) % k)
    else:
        print((sum(b) * sum(a)) % k)


if __name__ == '__main__':
    main()