#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<n;i++)
using namespace std;
typedef long long ll;
typedef pair<int,int> P;
const int INF = 1e9;
const int MOD = 1000000007;

int main(){
    int n,m;
    ll k;
    cin >> n >> m >> k;
    char op;
    cin >> op;
    vector<ll> a(m),b(n);
    rep(i,m) cin >> a[i];
    rep(i,n) cin >> b[i];
    ll a_sum = 0,b_sum = 0;
    rep(i,m) a_sum = (a_sum + a[i]) % k;
    rep(i,n) b_sum  = (b_sum + b[i]) % k;
    if(op =='+') cout << ((a_sum * n)%k + (b_sum * m)%k)%k <<endl;
    else cout << (a_sum * b_sum)%k << endl;
    return 0;
}