#include <bits/stdc++.h>

int main()
{
	int N, M, K;
	char op;
	scanf("%d%d%d %c", &N, &M, &K, &op);
	int64_t A{}, B{};
	for (int i{}; i < M; i++)
	{
		int64_t tmp;
		scanf("%lld", &tmp);
		B = (B + tmp) % K;
	}
	for (int i{}; i < N; i++)
	{
		int64_t tmp;
		scanf("%lld", &tmp);
		A = (A + tmp) % K;
	}
	int64_t ans{};
	if (op == '+') ans = (M * A % K + N * B % K) % K;
	else ans = A * B % K;
	printf("%lld\n", ans);
	
	return 0;
}