#include <bits/stdc++.h>

int main()
{
	int N, M, K;
	char op;
	scanf("%d%d%d %c", &N, &M, &K, &op);
	std::vector<int64_t> A(N), B(M);
	for (auto& e: B)
		scanf("%lld", &e);
	for (auto& e: A)
		scanf("%lld", &e);

	int64_t sum{};
	for (int i{}; i < N; i++)
		for (int j{}; j < M; j++)
		{
			int64_t ans{};
			if (op == '+') ans = A[i] + B[j];
			else ans = A[i] * B[j];
			sum = (sum + ans) % K;
		}
	printf("%lld\n", sum);

	return 0;
}