#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<n;i++)
typedef long long ll;
const int MOD = ((int)1e9)+7;
const int INF = (int)(1e9)+(int)(1e7);
const ll INFL = (ll)(1e18)+INF;
const double EPS = 1e-8;
using namespace std;
int main()
{
    int N,M,K;
    cin >> N >> M >> K;
    char op;
    cin >> op;
    vector<ll>A(N),B(M);
    ll asum=0;
    ll bsum=0;
    rep(i,M){cin >> B[i];bsum+=B[i];}
    rep(i,N){cin >> A[i];asum+=A[i];}
    ll ans =0;
    asum%=K;
    bsum%=K;
    if(op=='+'){
        ans+=asum*M;
        ans%=K;
        ans+=bsum*N;
        ans%=K;
    }
    else{
        ans=asum*bsum;
        ans%=K;
    }
    cout << ans << endl;
    
    return 0;
}