#include<bits/stdc++.h>
#define REP(i,n) for(int i=0;i<(n);i++)
#define ALL(v) (v).begin(),(v).end()
#define int long long
using namespace std;

using ull=unsigned long long;

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

signed 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));

    int sum=0;
    REP(i,Q){
        int x=next();
        int cnt=lower_bound(ALL(a),x)-a.begin();
        sum^=cnt*i;
    }
    cout<<sum<<endl;
 
}