#include <string>
#include <vector>
#include <iostream>
#include <algorithm>
#include <functional>
using namespace std;
int main() {
	int N, M, K; string op;
	cin >> N >> M >> K >> op;
	vector<int> B(M), A(N);
	for (int i = 0; i < M; ++i) cin >> B[i];
	for (int i = 0; i < N; ++i) cin >> A[i];
	if (op == "+") {
		int ans = 0;
		for (int i = 0; i < N; ++i) {
			ans = (ans + 1LL * A[i] * M) % K;
		}
		for (int i = 0; i < M; ++i) {
			ans = (ans + 1LL * B[i] * N) % K;
		}
		cout << ans << endl;
	}
	else {
		int as = 0, bs = 0;
		for (int i = 0; i < N; ++i) {
			as = (as + A[i]) % K;
		}
		for (int i = 0; i < M; ++i) {
			bs = (bs + B[i]) % K;
		}
		cout << 1LL * as * bs % K << endl;
	}
	return 0;
}