//#pragma GCC optimize("Ofast,no-stack-protector")
#include <bits/stdc++.h>
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,bmi")
#include <ext/random>
using namespace std;

#define all(x) begin(x), end(x)
#ifdef CKISEKI
#define safe cerr << __PRETTY_FUNCTION__ << " line " << __LINE__ << " safe\n"
#define debug(a...) debug_(#a, a)
#define orange(a...) orange_(#a, a)
void debug_(auto s, auto ...a) {
  cerr << "\e[1;32m(" << s << ") = (";
  int f = 0;
  (..., (cerr << (f++ ? ", " : "") << a));
  cerr << ")\e[0m\n";
}
#include <experimental/iterator>
void orange_(auto s, auto L, auto R) {
  cerr << "\e[1;33m[ " << s << " ] = [ ";
  using namespace experimental;
  copy(L, R, make_ostream_joiner(cerr, ", "));
  cerr << " ]\e[0m\n";
}
#else
#define safe ((void)0)
#define debug(...) safe
#define orange(...) safe
#endif

namespace {

static inline int gc() {
  constexpr int B = 1 << 20;
  static char buf[B], *p, *q;
  if (p == q)
    q = (p = buf) + fread_unlocked(buf, 1, B, stdin);
  return q == buf ? EOF : *p++;
}

void gn(auto &x) {
  x = 0;
  int c = gc();
  while ('0' > c or c > '9')
    c = gc();
  while ('0' <= c and c <= '9')
    x = x * 10 + c - '0', c = gc();
}
void gn(auto &x, auto& ...oth) {
  gn(x), gn(oth...);
}

using lld = int64_t;

namespace treap {
struct Node {
  lld tot_copy, sum;

  int val;
  int copy;

  int lc, rc;

  int sz;
};

const int maxn = 100025, lg = 20;
constexpr int MEM = 20'000'000;
Node T[MEM];
bool inuse[MEM];
int counter;

int inc_counter() {
  while (inuse[counter+1]) {
    ++counter;
  }
  return ++counter;
}

void pull(int o) {
  T[o].sz = 1;
  T[o].tot_copy = T[o].copy;
  T[o].sum = 1LL * T[o].copy * T[o].val;
  for (int c : {T[o].lc, T[o].rc})
    if (c) {
      T[o].sz += T[c].sz;
      T[o].tot_copy += T[c].tot_copy;
      T[o].sum += T[c].sum;
    }
}

int new_node(int x, int y) {
  int ret = inc_counter();
  T[ret].val = x;
  T[ret].copy = y;
  T[ret].lc = T[ret].rc = 0;
  pull(ret);
  return ret;
}

//__gnu_cxx::sfmt19937 rng(114514);
uint64_t z = 114514;
uint64_t MyRand() {
  z ^= z >> 12; z ^= z << 25; z ^= z >> 27;
  return z * 2685821657736338717ULL;
}
int MyUniform(uint32_t x) {
  const uint32_t up = bit_ceil(x);
  for (int i = 0; i < 2; ++i) {
    auto v = MyRand() & (up - 1);
    if (v <= x)
      return v;
  }
  return 0;
}
int merge(int a, int b) {
  if (!a || !b) return a ? a : b;
  assert(T[a].sz + T[b].sz - 1 >= 0);
  int r = MyUniform(T[a].sz + T[b].sz - 1);
  int ret = inc_counter();
  if (r < T[a].sz) {
    T[ret] = T[a];
    T[ret].rc = merge(T[a].rc, b);
  } else {
    T[ret] = T[b];
    T[ret].lc = merge(a, T[b].lc);
  }
  pull(ret);
  return ret;
}

lld query(int o, lld k) {
  if (!k) return 0;
  const lld s = T[o].tot_copy;
  assert(s >= k);
  lld left = T[o].lc ? T[T[o].lc].tot_copy : 0;
  if (k <= left) {
    return query(T[o].lc, k);
  } else if (k <= left + T[o].copy) {
    return (T[o].lc ? T[T[o].lc].sum : 0) + 1LL * T[o].val * (k - left);
  } else {
    return (T[o].lc ? T[T[o].lc].sum : 0) + 1LL * T[o].val * T[o].copy + query(T[o].rc, k - left - T[o].copy);
  }
}

int splitPrefix(int o, lld k) {
  assert(o > 0);
  if (!k) return 0;
  lld left = T[o].lc ? T[T[o].lc].tot_copy : 0;
  if (k <= left) {
    return splitPrefix(T[o].lc, k);
  } else if (k <= left + T[o].copy) {
    int ret = inc_counter();
    T[ret].val = T[o].val;
    T[ret].copy = k - left;
    T[ret].lc = T[o].lc;
    T[ret].rc = 0;
    pull(ret);
    return ret;
  } else {
    int ret = inc_counter();
    T[ret].val = T[o].val;
    T[ret].copy = T[o].copy;
    T[ret].lc = T[o].lc;
    T[ret].rc = splitPrefix(T[o].rc, k - left - T[o].copy);
    pull(ret);
    return ret;
  }
}

int pop_stack(int o, lld k) {
  const lld s = T[o].tot_copy;
  assert(s >= k);
  return splitPrefix(o, s - k);
}

#ifdef CKISEKI
void dump(int o, vector<pair<lld,lld>> &v) {
  if (!o) return;
  dump(T[o].lc, v);
  v.emplace_back(T[o].val, T[o].copy);
  dump(T[o].rc, v);
}
#endif

int mark = 0;
void scan(int o) {
  if (!o or inuse[o])
    return;
  mark++;
  inuse[o] = true;
  scan(T[o].lc), scan(T[o].rc);
}

}

struct Tag {
  lld pop;
  int push;
  Tag() : pop(0), push(0) {}
  Tag &operator+=(const Tag &rhs) {
    lld sz = push ? treap::T[push].tot_copy : 0;
    if (rhs.pop >= sz) {
      pop += rhs.pop - sz;
      push = rhs.push;
    } else {
      push = treap::pop_stack(push, rhs.pop);
      push = treap::merge(push, rhs.push);
    }
    return *this;
  }
};

namespace std {
  template <typename U, typename V>
  ostream &operator<<(ostream &o, pair<U, V> p) {
    return o<<p.first<<','<<p.second;
  }
}

struct Segtree {
  int n;
  vector<Tag> st;
  Segtree(int n_) : n(n_), st(n * 2) {}
  void upd(int p, const Tag &tg) {
    st[p] += tg;
  }
  void push(int p) {
    for (int h = __lg(n); h >= 0; h--) {
      int i = p >> h;
      if (i <= 1) continue;
      upd(i, st[i >> 1]);
      upd(i ^ 1, st[i >> 1]);
      st[i >> 1] = Tag();
    }
  }
  void apply(int l, int r, const Tag &tg) {
    push(l + n), push(r - 1 + n);
    for (l += n, r += n; l < r; l >>= 1, r >>= 1) {
      if (l & 1) upd(l++, tg);
      if (r & 1) upd(--r, tg);
    }
  }
  lld query(int p, lld L, lld R) {
    --L;
    push(p += n);
    int node = st[p].push;
    lld sz = node ? treap::T[node].tot_copy : 0;
    L = clamp<lld>(L, 0, sz);
    R = clamp<lld>(R, 0, sz);
    // vector<pair<lld,lld>> v;
    // treap::dump(node, v);
    // orange(all(v));
    return treap::query(node, R) - treap::query(node, L);
  }
  void scan() {
    for (int i = 0; i < 2*n; ++i) {
      treap::scan(st[i].push);
    }
  }
};

}

int main() {
  //cin.tie(nullptr)->sync_with_stdio(false);

  int n, m;
  gn(n, m);
  //cin >> n >> m;

  Segtree sgt(n);

  while (m--) {
    if (treap::counter > treap::MEM - 2000) {
      if (treap::mark) {
        memset(treap::inuse, 0, sizeof(treap::inuse));
        treap::mark = 0;
      }
      sgt.scan();
      debug("rebuild", treap::counter, treap::mark);
      treap::counter = 0;
    }

    int t;
    //cin >> t;
    gn(t);
    if (t == 1) {
      int l, r, x, y;
      //cin >> l >> r >> x >> y;
      gn(l, r, x, y);
      --l;
      Tag tg;
      tg.push = treap::new_node(y, x);
      sgt.apply(l, r, tg);
    } else if (t == 2) {
      int l, r;
      lld w;
      //cin >> l >> r >> w;
      gn(l, r, w);
      --l;
      Tag tg;
      tg.pop = w;
      sgt.apply(l, r, tg);
    } else {
      int k;
      lld p, q;
      //cin >> k >> p >> q;
      gn(k, p, q);
      --k;
      //cout << sgt.query(k, p, q) << '\n';
      printf("%" PRId64 "\n", sgt.query(k, p, q));
    }
  }

  return 0;
}