#include <iostream>
#include <string>
#include <cstring>
#include <utility>
#include <algorithm>
#include <map>
#include <set>
#include <vector>
#include <cmath>
#include <cstdlib>
#include <queue>
#include <stack>
#include <iomanip>
#include <fstream>
#include <unordered_set>

using namespace std;

#define REP(i, n) for(ll i = 0;i < n;i++)
#define REPR(i, n) for(ll i = n;i >= 0;i--)
#define FOR(i, m, n) for(ll i = m;i < n;i++)
#define FORR(i, m, n) for(ll i = m;i >= n;i--)
#define REPO(i, n) for(ll i = 1;i <= n;i++)
#define ll long long
#define INF (ll)1 << 60
#define MINF (-1 * INF)
#define ALL(n) n.begin(),n.end()
#define MOD 1000000007
#define P pair<ll, ll>


ll a[110000], b[110000], n, m, k, as, bs;
char c;
int main() {
	cin >> n >> m >> k >> c;
	REP(i, m) {
		cin >> b[i];
		bs += b[i];
		bs %= k;
	}
	REP(i, n) {
		cin >> a[i];
		as += a[i];
		as %= k;
	}
	if (c == '+')cout << (as * m % k + bs * n % k) % k << endl;
	else cout << as * bs % k << endl;
}