#include <bits/stdc++.h>
using namespace std;
struct node {
  long long l, r;
  mutable long long v;
  node(long long _l, long long _r = -1, long long _v = 0)
      : l(_l), r(_r), v(_v) {}
  bool operator<(const node &t) const { return l < t.l; }
};
set<node> st;
set<node>::iterator split(long long pos) {
  set<node>::iterator it = st.lower_bound(node(pos));
  if (it != st.end() && it->l == pos) {
    return it;
  }
  it--;
  long long l = it->l, r = it->r;
  long long v = it->v;
  st.erase(it);
  st.insert(node(l, pos - 1, v));
  return st.insert(node(pos, r, v)).first;
}
void add(long long l, long long r, long long value) {
  set<node>::iterator itr = split(r + 1), itl = split(l);
  for (; itl != itr; itl++) {
    itl->v += value;
  }
}
void assign(long long l, long long r, long long value) {
  set<node>::iterator itr = split(r + 1), itl = split(l);
  st.erase(itl, itr);
  st.insert(node(l, r, value));
}
long long rank_k(long long l, long long r, long long k, bool reversed = false) {
  if (reversed) {
    k = r - l + 2 - k;
  }
  set<node>::iterator itr = split(r + 1), itl = split(l);
  vector<pair<long long, long long> > ans;
  for (; itl != itr; itl++) {
    ans.push_back(make_pair(itl->v, itl->r - itl->l + 1));
  }
  sort(ans.begin(), ans.end());
  for (auto it : ans) {
    k -= it.second;
    if (k <= 0) {
      return it.first;
    }
  }
  return -1;
}
long long quick_pow(long long a, long long n, long long mod) {
  long long ans = 1;
  a %= mod;
  while (n) {
    if (n & 1) {
      ans = ans * a % mod;
    }
    a = a * a % mod;
    n >>= 1;
  }
  return ans;
}
long long sum(long long l, long long r, long long n, long long mod) {
  set<node>::iterator itr = split(r + 1), itl = split(l);
  long long ans = 0;
  for (; itl != itr; itl++) {
    ans =
        (ans + 1ll * (itl->r - itl->l + 1) * quick_pow(itl->v, n, mod) % mod) %
        mod;
  }
  return ans;
}
long long n, m, seed, vmax;
const long long mod = 1e9 + 7;
long long rnd() {
  long long ret = seed;
  seed = (1ll * seed * 7 + 13) % mod;
  return ret;
}
signed main() {
  scanf("%lld %lld %lld %lld", &n, &m, &seed, &vmax);
  for (long long i = 1; i <= n; i++) {
    st.insert(node(i, i, rnd() % vmax + 1));
  }
  for (long long i = 1; i <= m; i++) {
    long long op = rnd() % 4 + 1, l = rnd() % n + 1, r = rnd() % n + 1, x, y;
    if (l > r) {
      swap(l, r);
    }
    if (op == 3) {
      x = rnd() % (r - l + 1) + 1;
    } else {
      x = rnd() % vmax + 1;
    }
    if (op == 4) {
      y = rnd() % vmax + 1;
    }
    if (op == 1) {
      add(l, r, x);
    } else if (op == 2) {
      assign(l, r, x);
    } else if (op == 3) {
      printf("%lld\n", rank_k(l, r, x));
    } else {
      printf("%lld\n", sum(l, r, x, y));
    }
  }
  return 0;
}
