#include<iostream>
using namespace std;
int N,M;
char op;
long A[1<<17],B[1<<17];
long K,ans;
main()
{
	cin>>N>>M>>K;
	cin>>op;
	long Bs=0;
	for(int j=0;j<M;j++)
	{
		cin>>B[j];
		(Bs+=B[j])%=K;
	}
	for(int i=0;i<N;i++)
	{
		cin>>A[i];
		(ans+=op=='+'?A[i]*M+Bs:A[i]*Bs)%=K;
	}
	cout<<ans<<endl;
}