import std.algorithm, std.container, std.conv, std.math, std.range, std.typecons, std.stdio, std.string;

auto rdsp(){return readln.splitter;}
void pick(R,T)(ref R r,ref T t){t=r.front.to!T;r.popFront;}
void pickV(R,T...)(ref R r,ref T t){foreach(ref v;t)pick(r,v);}
void readV(T...)(ref T t){auto r=rdsp;foreach(ref v;t)pick(r,v);}

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

const tb = 31, ub = 18, db = tb-ub;

void main()
{
  int n, q; readV(n, q, seed);

  foreach (i; 0..10000) next();

  auto a = new int[](n);
  foreach (i; 0..n) a[i] = next();

  auto b = new int[][](1<<ub), c = new int[](1<<ub);
  foreach (ai; a) {
    b[ai>>db] ~= ai;
    ++c[ai>>db];
  }
  auto cc = new int[](1<<ub+1);
  foreach (i; 0..1<<ub) cc[i+1] = cc[i]+c[i];

  auto ans = 0uL;
  foreach (ulong i; 0..q) {
    auto x = next(), xi = (x>>db), r = cc[xi];
    foreach (bi; b[xi]) r += bi < x;
    ans ^= i * r;
  }

  writeln(ans);
}