#include <bits/stdc++.h>
using namespace std;
const int maxn = 100000 + 10;
const long long mod = 1000000000 + 7;
struct node {
  int l, r;
  mutable long long v;
  node(int L, int R = -1, long long v = 0) : l(L), r(R), v(v){};
  bool operator<(const node &x) const { return l < x.l; }
};
long long quick(long long a, long long n, long long p) {
  a %= p;
  long long ans = 1;
  while (n) {
    if (n & 1) ans = ans * a % p;
    a = a * a % p;
    n >>= 1;
  }
  return ans;
}
set<node> s;
set<node>::iterator spilt(int pos) {
  set<node>::iterator it = s.lower_bound(node(pos));
  if (it != s.end() && it->l == pos) return it;
  it--;
  int R = it->r, L = it->l;
  long long V = it->v;
  s.erase(it);
  s.insert(node(L, pos - 1, V));
  return s.insert(node(pos, R, V)).first;
}
void assign_val(int l, int r, long long val) {
  set<node>::iterator itr = spilt(r + 1), itl = spilt(l);
  s.erase(itl, itr);
  s.insert(node(l, r, val));
}
void add(int l, int r, long long val) {
  set<node>::iterator itr = spilt(r + 1), itl = spilt(l);
  for (; itl != itr; itl++) itl->v += val;
}
long long ranks(int l, int r, int k) {
  vector<pair<long long, int> > vp;
  set<node>::iterator itr = spilt(r + 1), itl = spilt(l);
  for (; itl != itr; itl++) {
    vp.push_back({itl->v, itl->r - itl->l + 1});
  }
  sort(vp.begin(), vp.end());
  for (int i = 0; i < vp.size(); i++) {
    k -= vp[i].second;
    if (k <= 0) return vp[i].first;
  }
}
long long sum(int l, int r, int ex, long long p) {
  set<node>::iterator itr = spilt(r + 1), itl = spilt(l);
  long long ret = 0;
  for (; itl != itr; itl++) {
    ret += 1ll * (itl->r - itl->l + 1) * quick(itl->v, ex, p) % p;
    ret %= p;
  }
  return ret;
}
int n, m;
long long seed, vmax, a[maxn];
long long rnd() {
  long long ret = seed;
  seed = (seed * 7 + 13) % mod;
  return ret;
}
int main() {
  cin >> n >> m >> seed >> vmax;
  for (int i = 1; i <= n; i++) {
    a[i] = (rnd() % vmax) + 1;
    s.insert(node(i, i, a[i]));
  }
  s.insert(node(n + 1, n + 1, 0));
  int x, y;
  for (int i = 1; i <= m; i++) {
    int op = int(rnd() % 4) + 1;
    int l = int(rnd() % n) + 1;
    int r = int(rnd() % n) + 1;
    if (l > r) swap(l, r);
    if (op == 3)
      x = int(rnd() % (r - l + 1)) + 1;
    else
      x = int(rnd() % vmax) + 1;
    if (op == 4) y = int(rnd() % vmax) + 1;
    if (op == 1)
      add(l, r, x);
    else if (op == 2)
      assign_val(l, r, x);
    else if (op == 3)
      cout << ranks(l, r, x) << endl;
    else
      cout << sum(l, r, x, y) << endl;
  }
  return 0;
}
