#include <bits/stdc++.h>
#define rep(i,n) for(int i=(0);i<(n);i++)

using namespace std;

typedef long long ll;

int main(){
	cin.tie(0);
	ios::sync_with_stdio(false);
	
	ll n, m, k;
	cin >> n >> m >> k;

	string op;
	cin >> op;

	vector<ll> b(m);
	rep(i, m) cin >> b[i];

	vector<ll> a(n);
	rep(i, n) cin >> a[i];

	ll asum = 0;
	rep(i, n){
		asum += a[i];
		asum %= k;
	}

	ll bsum = 0;
	rep(i, m){
		bsum += b[i];
		bsum %= k;
	}

	ll ans = 0;
	if(op == "+"){
		ans += m * asum;
		ans %= k;
		ans += n * bsum;
		ans %= k;
	}else{
		ans += asum * bsum;
		ans %= k;
	}

	cout << ans << endl;
}