#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int main() {
	ll n , m , k;
	cin >> n >> m >> k;
	char op;
    ll sum_a = 0 , sum_b = 0;
	cin >> op;
	for(int i = 0; i < m; i++){
	    ll b;
	    cin >> b;
	    sum_b += b;
	    sum_b %= k;
	}
	for(int i = 0; i < n; i++){
	   ll a;
	   cin >> a;
	   sum_a += a;
	   sum_a %= k;
	}
	if(op == '*'){
	    cout << (sum_b * sum_a) % k << endl;
	}else{
	    cout << ((n * sum_b) % k + (m * sum_a) % k) % k << endl;
	}
	return 0;
}