#include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 10;
struct node {
  int l, r;
  mutable long long val;
  node(int l, int r = -1, long long val = 0) : l(l), r(r), val(val) {}
  bool operator<(const node &o) const { return l < o.l; }
};
set<node> s;
long long power(long long a, long long b, long long p) {
  long long ans = 1, base = a % p;
  for (; b; b >>= 1) {
    if (b & 1) ans = ans * base % p;
    base = base * base % p;
  }
  return ans;
}
set<node>::iterator split(int pos) {
  set<node>::iterator it = s.lower_bound(node(pos));
  if (it != s.end() and it->l == pos) return it;
  --it;
  int l = it->l, r = it->r;
  long long v = it->val;
  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 x) {
  set<node>::iterator itr = split(r + 1), itl = split(l);
  for (; itl != itr; ++itl) itl->val += x;
}
void assign(int l, int r, long long x) {
  set<node>::iterator itr = split(r + 1), itl = split(l);
  s.erase(itl, itr);
  s.insert(node(l, r, x));
}
long long ranking(int l, int r, int x) {
  vector<pair<long long, int> > vp;
  set<node>::iterator itr = split(r + 1), itl = split(l);
  vp.clear();
  for (; itl != itr; ++itl)
    vp.push_back(make_pair(itl->val, itl->r - itl->l + 1));
  sort(vp.begin(), vp.end());
  for (vector<pair<long long, int> >::iterator it = vp.begin(); it < vp.end();
       ++it) {
    x -= it->second;
    if (x <= 0) return it->first;
  }
}
long long sum(int l, int r, long long x, long long y) {
  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) * power(itl->val, x, y)) % y;
  return ans;
}
int n, m;
long long seed, vmax, a[N];
long long rnd() {
  long long ret = seed;
  seed = (seed * 7 + 13) % 1000000007;
  return ret;
}
int main() {
  scanf("%d%d%lld%lld", &n, &m, &seed, &vmax);
  for (int i = 1; i <= n; ++i) {
    a[i] = (rnd() % vmax) + 1;
    s.insert(node(i, i, a[i]));
  }
  for (int i = 1; i <= m; ++i) {
    int op = (rnd() % 4) + 1, l = (rnd() % n) + 1, r = (rnd() % n) + 1;
    if (l > r) swap(l, r);
    if (op == 3) {
      long long x = (rnd() % (r - l + 1)) + 1;
      printf("%lld\n", ranking(l, r, x));
    } else {
      long long x = (rnd() % vmax) + 1;
      if (op == 1) add(l, r, x);
      if (op == 2) assign(l, r, x);
      if (op == 4) {
        long long y = (rnd() % vmax) + 1;
        printf("%lld\n", sum(l, r, x, y));
      }
    }
  }
  return 0;
}
