#include<bits/stdc++.h>

using namespace std;
using ll=long long;
#define rep2(i, a, n) for(int i = (a); i < (n); i++)
#define rep(i, n) rep2(i,0,n)

int main(){
  cin.tie(nullptr);ios_base::sync_with_stdio(false);
  int n,m,k;
  cin>>n>>m>>k;
  char op;
  cin>>op;
  vector<int> b(m),a(n);
  rep(i,m)cin>>b[i];
  rep(i,n)cin>>a[i];
	if (op == '+') {
		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;
	}
}