#define _USE_MATH_DEFINES
#include<iostream>
#include<vector>
#include<algorithm>
#include<cmath>
#include<string>
#include<iomanip>
#include<numeric>
#include<queue>
#include<deque>
#include<stack>
#include<set>
#include<map>
#include<random>
using namespace std;
typedef long long ll;
const int mod=998244353;
int main(){
	int n,m,k,a,b;
	char op;
	cin>>n>>m>>k>>op;
	ll suma=0,sumb=0;
	for(int i=0;i<m;i++){
		cin>>b;
		(sumb+=b)%=k;
	}
	while(cin>>a)
		(suma+=a)%=k;
	cout<<(op=='+'?(suma*m+sumb*n)%k:suma*sumb%k)<<endl;
}