#include<iostream>
#include<algorithm>
#include<string>
#include<vector>
#include<cmath>
#include<map>
#include<iomanip>
#include<queue>
#include<stack>
#include<time.h>
#define int long long
#define double long double
#define rep(i,n) for(int i=0;i<n;i++)
#define REP(i,n) for(int i=1;i<=n;i++)
using namespace std;
int n, m, k;
char c;
int a[114514], b[114514];
signed main() {
	cin >> n >> m >> k;
	cin >> c;
	rep(i, m)cin >> a[i];
	rep(i, n)cin >> b[i];
	if (c == '+') {
		int p = 0, q = 0;
		rep(i, m)p += a[i];
		rep(i, n)q += b[i];
		p %= k, q %= k;
		cout << (p * n + q * m) % k << endl;
	}
	else {
		int p = 0, q = 0;
		rep(i, m)p += a[i];
		rep(i, n)q += b[i];
		p %= k, q %= k;
		cout << p * q % k << endl;
	}
}