#include <bits/stdc++.h>
using std::pair;
using std::set;
using std::vector;
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 &a) const { return l < a.l; }
};
set<node> s;
long long qpow(long long a, long long b, long long mo) {
  long long ans = 1, base = a % mo;
  while (b) {
    if (b & 1) ans = ans * base % mo;
    base = base * base % mo;
    b >>= 1;
  }
  return ans;
}
set<node>::iterator split(int pos) {
  set<node>::iterator it = s.lower_bound(node(pos));
  if (it != s.end() && it->l == pos) return it;
  it--;
  int l = it->l, r = it->r;
  long long v = it->v;
  s.erase(it);
  s.insert(node(l, pos - 1, v));
  return s.insert(node(pos, r, v)).first;
}
void add(int l, int r, long long num) {
  set<node>::iterator itr = split(r + 1), itl = split(l);
  for (; itl != itr; itl++) itl->v += num;
}
void assign_num(int l, int r, long long num) {
  set<node>::iterator itr = split(r + 1), itl = split(l);
  s.erase(itl, itr);
  s.insert(node(l, r, num));
}
long long get_kth(int l, int r, long long k) {
  vector<pair<long long, int> > vec;
  set<node>::iterator itr = split(r + 1), itl = split(l);
  vec.clear();
  for (; itl != itr; itl++)
    vec.push_back(pair<long long, int>(itl->v, itl->r - itl->l + 1));
  std::sort(vec.begin(), vec.end());
  for (vector<pair<long long, int> >::iterator it = vec.begin();
       it != vec.end(); it++) {
    k -= it->second;
    if (k <= 0) return it->first;
  }
  return -1LL;
}
long long get_pow(int l, int r, long long p, long long mo) {
  long long ans = 0;
  set<node>::iterator itr = split(r + 1), itl = split(l);
  for (; itl != itr; itl++)
    ans = (ans + (itl->r - itl->l + 1) * qpow(itl->v, p, mo)) % mo;
  return ans;
}
int n, m;
long long seed, vmax;
long long rnd() {
  long long ret = seed;
  seed = (seed * 7 + 13) % 1000000007;
  return ret;
}
void get_data() {
  for (int i = 1; i <= n; i++) {
    long long num = (rnd() % vmax) + 1;
    s.insert(node(i, i, num));
  }
}
int main() {
  scanf("%d%d", &n, &m);
  scanf("%lld%lld", &seed, &vmax);
  get_data();
  while (m--) {
    int opt = (rnd() % 4) + 1;
    int l = (rnd() % n) + 1;
    int r = (rnd() % n) + 1;
    if (l > r) std::swap(l, r);
    long long x = opt == 3 ? ((rnd() % (r - l + 1)) + 1) : ((rnd() % vmax) + 1);
    switch (opt) {
      case 1:
        add(l, r, x);
        break;
      case 2:
        assign_num(l, r, x);
        break;
      case 3:
        printf("%lld\n", get_kth(l, r, x));
        break;
      case 4: {
        long long y = (rnd() % vmax) + 1;
        printf("%lld\n", get_pow(l, r, x, y));
        break;
      }
    }
  }
}
