#include<bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
typedef long long ll;
typedef pair<int,int> P;
int main()
{
    long N, M,K;
    char op;
    cin >> N >> M >>K >> op;
    vector<ll> A(N), B(M);
    ll num=0;
    rep(i, M) cin >> B.at(i);
    rep(i, N) cin >> A.at(i);
    rep(i,N){
        rep(j,M){
            ll a = op == '+' ? B.at(j) + A.at(i) : B.at(j) * A.at(i);
            num = (num + a) % K;
        }
        
    }
    cout << num << endl;
}