#include <iostream>
#include <vector>
#include <numeric>
#define rep(i, n) for(int (i) = 0; (i) < (n); (i)++)
using namespace std;

int main(){
    int n, m, k;
    unsigned long ans = 0;
    char op;
    cin >> n >> m >> k >> op;
    vector <unsigned long> b(m);
    vector <unsigned long> a(n);
    rep(i, m) cin >> b[i];
    rep(i, n) cin >> a[i];

    if(op == '+'){
        rep(i, n) ans += a[i] * m; 
        rep(i, m) ans += b[i] * n;
    }else{
        ans = (accumulate(a.begin(), a.end(), 0) % k) * (accumulate(b.begin(), b.end(), 0) % k);
    }

    cout << ans % k << endl;

    return 0;
}