#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;
  int a[m],b[n];
  rep(i,m)cin>>a[i];
  rep(i,n)cin>>b[i];

	int p=0,q=0;
  rep(i,m)p+=a[i];
	rep(i,n)q+=b[i];
	p%=k,q%=k;
	if (op=='+'){
		cout<<(p*n+q*m)%k<<endl;
	}else{
		cout<<p*q%k<<endl;
	}
}