# import sys; input = sys.stdin.buffer.readline
# sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 10 ** 9 + 7; INF = float("inf")
from fractions import gcd

def getlist():
	return list(map(int, input().split()))

#処理内容
def main():
	N, M, K = getlist()
	B = list(input().split())
	if B[0] == "+":
		ans = 0
		for i in range(1, M + 1):
			ans += int(B[i])
		ans *= N

		for i in range(N):
			A = int(input())
			ans += M * A
		ans %= K
		print(ans)

	else:
		pre1 = 0
		for i in range(1, M + 1):
			pre1 += int(B[i])
		pre2 = 0
		for i in range(N):
			A = int(input())
			pre2 += A

		ans = (pre1 * pre2) % K
		print(ans)



if __name__ == '__main__':
	main()