#include <iostream>
#include <vector>

using namespace std;
using ll = long long;
using ull = unsigned 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;
    for (int i = 0; i < 10000; i++) next();
    
    vector<int> a(n);
    for (int i = 0; i < n; i++) a[i] = next();

    ll sm = 0;
    for (int i = 0; i < q; i++) {
        int x = next();
        int cnt = 0;
        for (int j = 0; j < n; j++) {
            if (a[j] < x) cnt++;
        }
        sm ^= ll(cnt) * i;
    }
    cout << sm << endl;
    return 0;
}