// naive
#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define rep1(i,n) for(int i=1;i<=(int)(n);i++)
#define all(c) c.begin(),c.end()
#define pb push_back
#define fs first
#define sc second
#define show(x) cout << #x << " = " << x << endl
#define chmin(x,y) x=min(x,y)
#define chmax(x,y) x=max(x,y)
using namespace std;
template<class S,class T> ostream& operator<<(ostream& o,const pair<S,T> &p){return o<<"("<<p.fs<<","<<p.sc<<")";}
template<class T> ostream& operator<<(ostream& o,const vector<T> &vc){o<<"sz = "<<vc.size()<<endl<<"[";for(const T& v:vc) o<<v<<",";o<<"]";return o;}

using ull = unsigned long long;
using ll = long long;

ull seed;
int next(){
	seed = seed ^ (seed<<13);
	seed = seed ^ (seed>>7);
	seed = seed ^ (seed<<17);
	return (seed>>33);
}

int main(){
	int N,Q;
	cin>>N>>Q>>seed;
	rep(i,10000) next();

	vector<int> a(N);
	rep(i,N) a[i] = next();
	sort(all(a));

	ll res = 0;
	rep(qt,Q){
		int x = next();
		int cnt = lower_bound(all(a),x) - a.begin();
		res ^= ll(cnt)*qt;
	}
	cout<<res<<endl;
}