#include <cstdio>
#include <algorithm>
using namespace std;

int n,q,A[200010];
unsigned long long seed;
long long ans;

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

int main()
{
    int i,x,y,z;

    scanf("%d%d%llu",&n,&q,&seed);
    for(i=0;i<10000;i++) next();
    for(i=1;i<=n;i++) A[i] = next();
    sort(A+1,A+n+1);

    for(i=0;i<q;i++)
    {
        x = next();
        y = 1LL*x*n/A[n] + 10;
        if(y > n) y = n;
        if(A[y] < x) y = n;
        ans ^= 1LL*i*(lower_bound(A+1,A+y+1,x)-A-1);
    }
    printf("%lld",ans);
    return 0;
}