#include <bits/stdc++.h>
using namespace std;

int main() {
	int64_t n, m, k; cin >> n >> m >> k;
	char op; cin >> op;
	int64_t b[m]; for(int i = 0; i < m; ++i) cin >> b[i];
	int64_t a[n]; for(int i = 0; i < n; ++i) cin >> a[i];
	int64_t ans = 0;
	if(op == '+') {
		for(int i = 0; i < n; ++i) {
			ans += a[i] * m;
			ans %= k;
		}
		for(int i = 0; i < m; ++i) {
			ans += b[i] * n;
			ans %= k;
		}
	} else {
		int64_t bsum = 0;
		for(int i = 0; i < m; ++i) bsum += b[i];
		bsum %= k;
		for(int i = 0; i < n; ++i) {
			ans += a[i] * bsum;
			ans %= k;
		}
	}
	cout << ans << '\n';
	return 0;
}