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

#define rep(i,n) for(int (i)=0;(i)<(n);(i)++)
#define rep3(i,m,n) for(int (i)=m;(i)<=(n);(i)++)
#define rep3rev(i,m,n) for(int (i)=m;(i)>=(n);(i)--)
#define all(a) (a.begin()),(a.end())
#define rall(a) (a.rbegin()),(a.rend())
#define fi first
#define se second

typedef long long ll;
typedef vector<int> vi;
typedef vector<vector<int>> vvi;
typedef vector<ll> vll;
typedef pair<int, int> pii;

void Main()
{
    int n, m, k;
    cin >> n >> m >> k;
    char op;
    cin >> op;
    vll b(m), a(n);
    rep(j,m) cin >> b[j];
    rep(i,n) cin >> a[i];
    ll sum;
    if(op == '+'){
        sum = 0;
        rep(i,n){
            rep(j,m){
                sum = (sum + a[i] + b[j]) % k;
            }
        }
    }
    else if(op == '*'){
        sum = 0;
        rep(i,n){
            rep(j,m){
                sum = (sum + (a[i]%k)*(b[j]%k))%k;
            }
        }
    }
    cout << sum << endl;
	return;
}

int main()
{
	cin.tie(nullptr);
	ios_base::sync_with_stdio(false);
	cout << fixed << setprecision(15);
	Main();
	return 0;
}