#include <bits/stdc++.h>
using namespace std;

int main() {
	long n,m,k,i,j,cur1,cur2,t;
	cin >> n >> m >> k;
	char op;
	cin >> op;
	cur1=0;
	for(i=0; i<m; i++){
		cin >> t;
		cur1+=t;
		cur1%=k;
	}

	cur2=0;
	for(i=0; i<n; i++){
		cin >> t;
		cur2+=t;
		cur2%=k;
	}
	
	n%=k; m%=k;
	if(op=='+'){
		cout << (cur1*n+cur2*m)%k << endl;
	}else{
		cout << (cur1*cur2)%k << endl;
	}
	return 0;
}