// includes {{{
#include <algorithm>
#include <cassert>
#include <cmath>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <tuple>
#include <vector>
// #include<deque>
// #include<multiset>
// #include<bitset>
// #include<cstring>
// #include<bits/stdc++.h>
// }}}
using namespace std;
using ll = long long;

// LazySegmentTree( size [, initial] )
// LazySegmentTree( <data> )
/// --- LazySegmentTree {{{ ///
#include <cassert>
#include <initializer_list>
#include <iostream>
#include <vector>
template < class M_act >
struct LazySegmentTree {
public:
  using Monoid = typename M_act::Monoid;
  using X = typename Monoid::T;
  using M = typename M_act::M;

private:
  size_t n;
  int h;
  vector< X > data;
  vector< M > lazy;
  vector< size_t > nodeLength;
  // call before use data[i]
  void eval(size_t i) {
    if(lazy[i] == M_act::identity()) return;
    data[i] = M_act::actInto(lazy[i], nodeLength[i], data[i]);
    if(i < n) {
      lazy[i * 2] = M_act::op(lazy[i], lazy[i * 2]);
      lazy[i * 2 + 1] = M_act::op(lazy[i], lazy[i * 2 + 1]);
    }
    lazy[i] = M_act::identity();
  }
  // call before use seg[i] = data[i + n]
  void evalDown(size_t i) {
    i += n;
    for(int j = h - 1; j >= 0; j--) eval(i >> j);
  }
  // call after touch seg[i] = data[i + n]
  void propUp(size_t i) {
    i += n;
    while(i >>= 1)
      eval(i * 2), eval(i * 2 + 1), data[i] = Monoid::op(data[i * 2], data[i * 2 + 1]);
  }

public:
  LazySegmentTree() : n(0) {}
  LazySegmentTree(size_t n, X initial = Monoid::identity()) : n(n) {
    if(n > 0) {
      h = 1;
      while(1u << h < n) h++;
      data.resize(2 * n, initial);
      lazy.resize(2 * n, M_act::identity());
      nodeLength.resize(2 * n, 1);
      for(size_t i = n - 1; i > 0; i--) // fill from deep
        data[i] = Monoid::op(data[i * 2], data[i * 2 + 1]),
        nodeLength[i] = nodeLength[i * 2] + nodeLength[i * 2 + 1];
    }
  }
  template < class InputIter, class = typename iterator_traits< InputIter >::value_type >
  LazySegmentTree(InputIter first, InputIter last)
      : LazySegmentTree(distance(first, last)) {
    if(n > 0) {
      copy(first, last, begin(data) + n);
      for(size_t i = n - 1; i > 0; i--) // fill from deep
        data[i] = Monoid::op(data[i * 2], data[i * 2 + 1]);
    }
  }
  LazySegmentTree(vector< X > v) : LazySegmentTree(v.begin(), v.end()) {}
  LazySegmentTree(initializer_list< X > v) : LazySegmentTree(v.begin(), v.end()) {}
  void act(int l, int r, const M &m) {
    if(l < 0) l = 0;
    if(l >= r) return;
    if(r > (int) n) r = n;
    evalDown(l);
    evalDown(r - 1);
    int tl = l, tr = r;
    for(l += n, r += n; l < r; l >>= 1, r >>= 1) {
      if(l & 1) eval(l), lazy[l] = m, eval(l), l++;
      if(r & 1) --r, eval(r), lazy[r] = m, eval(r);
    }
    propUp(tl);
    propUp(tr - 1);
  }
  void set(size_t i, const X &x) {
    assert(i < n);
    evalDown(i);
    data[i + n] = x;
    propUp(i);
  }
  X get(size_t i) {
    assert(i < n);
    evalDown(i);
    return data[i + n];
  }
  X query(int l, int r) {
    if(l < 0) l = 0;
    if(l >= r) return Monoid::identity();
    if(r > (int) n) r = n;
    evalDown(l);
    evalDown(r - 1);
    X tmpL = Monoid::identity(), tmpR = Monoid::identity();
    for(l += n, r += n; l < r; l >>= 1, r >>= 1) {
      if(l & 1) eval(l), tmpL = Monoid::op(tmpL, data[l]), l++;
      if(r & 1) --r, eval(r), tmpR = Monoid::op(data[r], tmpR);
    }
    return Monoid::op(tmpL, tmpR);
  }
  int size() { return n; }
  inline void dum(int r = -1) {
#ifdef DEBUG
    if(r < 0) r = n;
    DEBUG_OUT << "{";
    for(int i = 0; i < min(r, (int) n); i++) DEBUG_OUT << (i ? ", " : "") << get(i);
    DEBUG_OUT << "}" << endl;
#endif
  }
};

/// }}}--- ///

/// --- Monoid examples {{{ ///
constexpr long long inf_monoid = 1e18 + 100;
#include <algorithm>
struct Nothing {
  using T = char;
  using Monoid = Nothing;
  using M = T;
  static constexpr T op(const T &, const T &) { return T(); }
  static constexpr T identity() { return T(); }
  template < class X >
  static constexpr X actInto(const M &, ll, ll, const X &x) {
    return x;
  }
};

template < class U = long long >
struct RangeMin {
  using T = U;
  static T op(const T &a, const T &b) { return min(a, b); }
  static constexpr T identity() { return T(inf_monoid); }
};

template < class U = long long >
struct RangeMax {
  using T = U;
  static T op(const T &a, const T &b) { return max(a, b); }
  static constexpr T identity() { return -T(inf_monoid); }
};

template < class U = long long >
struct RangeSum {
  using T = U;
  static T op(const T &a, const T &b) { return a + b; }
  static constexpr T identity() { return T(0); }
};

template < class U >
struct RangeProd {
  using T = U;
  static T op(const T &a, const T &b) { return a * b; }
  static constexpr T identity() { return T(1); }
};

template < class U = long long >
struct RangeOr {
  using T = U;
  static T op(const T &a, const T &b) { return a | b; }
  static constexpr T identity() { return T(0); }
};

#include <bitset>

template < class U = long long >
struct RangeAnd {
  using T = U;
  static T op(const T &a, const T &b) { return a & b; }
  static constexpr T identity() { return T(-1); }
};

template < size_t N >
struct RangeAnd< bitset< N > > {
  using T = bitset< N >;
  static T op(const T &a, const T &b) { return a & b; }
  static constexpr T identity() { return bitset< N >().set(); }
};

/// }}}--- ///

/// --- M_act examples {{{ ///
template < class U = long long, class V = U >
struct RangeMinAdd {
  using X = U;
  using M = V;
  using Monoid = RangeMin< U >;
  static M op(const M &a, const M &b) { return a + b; }
  static constexpr M identity() { return 0; }
  static X actInto(const M &m, ll, const X &x) { return m + x; }
};

template < class U = long long, class V = U >
struct RangeMaxAdd {
  using X = U;
  using M = V;
  using Monoid = RangeMax< U >;
  static M op(const M &a, const M &b) { return a + b; }
  static constexpr M identity() { return 0; }
  static X actInto(const M &m, ll, const X &x) { return m + x; }
};

template < class U = long long, class V = U >
struct RangeMinSet {
  using M = U;
  using Monoid = RangeMin< U >;
  using X = typename Monoid::T;
  static M op(const M &a, const M &) { return a; }
  static constexpr M identity() { return -M(inf_monoid); }
  static X actInto(const M &m, ll, const X &) { return m; }
};

template < class U = long long, class V = U >
struct RangeMaxSet {
  using M = U;
  using Monoid = RangeMax< U >;
  using X = typename Monoid::T;
  static M op(const M &a, const M &) { return a; }
  static constexpr M identity() { return -M(inf_monoid); }
  static X actInto(const M &m, ll, const X &) { return m; }
};

template < class U = long long, class V = U >
struct RangeSumAdd {
  using X = U;
  using M = V;
  using Monoid = RangeSum< U >;
  static M op(const M &a, const M &b) { return a + b; }
  static constexpr M identity() { return 0; }
  static X actInto(const M &m, ll n, const X &x) { return m * n + x; }
};

template < class U = long long, class V = U >
struct RangeSumSet {
  using X = U;
  using M = V;
  using Monoid = RangeSum< U >;
  static M op(const M &a, const M &) { return a; }
  static constexpr M identity() { return -M(inf_monoid); }
  static X actInto(const M &m, ll n, const X &) { return m * n; }
};

template < class U, class V = U >
struct RangeProdMul {
  using X = U;
  using M = V;
  using Monoid = RangeProd< U >;
  static M mpow(M a, ll b) {
    X r(1);
    while(b) {
      if(b & 1) r = r * a;
      a = a * a;
      b >>= 1;
    }
    return r;
  }
  static M op(const M &a, const M &b) { return a * b; }
  static constexpr M identity() { return M(1); }
  static X actInto(const M &m, ll n, const X &x) { return x * mpow(m, n); }
};

template < class U, class V = U >
struct RangeProdSet {
  using X = U;
  using M = V;
  using Monoid = RangeProd< U >;
  static M op(const M &a, const M &) { return a; }
  static constexpr M identity() { return V::unused; }
  static X actInto(const M &m, ll n, const X &) {
    return RangeProdMul< U, V >::mpow(m, n);
  }
};

template < class U = long long, class V = U >
struct RangeOr2 {
  using X = U;
  using M = V;
  using Monoid = RangeOr< U >;
  static M op(const M &a, const M &b) { return a | b; }
  static constexpr M identity() { return M(0); }
  static X actInto(const M &m, ll, const X &x) { return m | x; }
};

template < class U = long long, class V = U >
struct RangeAnd2 {
  using X = U;
  using M = V;
  using Monoid = RangeAnd< U >;
  static M op(const M &a, const M &b) { return a & b; }
  static constexpr M identity() { return M(-1); }
  static X actInto(const M &m, ll, const X &x) { return m & x; }
};

template < class U, size_t N >
struct RangeAnd2< U, bitset< N > > {
  using X = U;
  using M = bitset< N >;
  using Monoid = RangeAnd< U >;
  static M op(const M &a, const M &b) { return a & b; }
  static constexpr M identity() { return bitset< N >().set(); }
  static X actInto(const M &m, ll, const X &x) { return m & x; }
};
/// }}}--- ///

using Seg = LazySegmentTree< RangeSumAdd<> >;

// HLD( <tree> , root )
// === build() ===
// .query(hi, lo, func, inclusive?)
// .getIn(i) : In-time of Euler Tour
// .getOut(i) : out-time of Euler Tour
/// --- HL-Decomposition Library {{{ ///
#include <functional>
#include <vector>
struct HLD {
public:
  using size_type = size_t;
  using graph_type = vector< vector< int > >;

private:
  size_type n;
  vector< size_type > head;
  vector< size_type > sub;
  vector< size_type > dep;
  vector< int > par;
  vector< size_type > vid;
  size_type root;
  graph_type tree;

public:
  HLD(): n(0) {}
  HLD(size_type n, size_type root = 0)
      : n(n), head(n), sub(n), dep(n), par(n), vid(n), tree(n) {
    setRoot(root);
  }
  HLD(const graph_type &tree, size_type root) : HLD(tree.size(), root) {
    this->tree = tree;
  }

  void setRoot(size_type root) {
    assert(root < n);
    this->root = root;
  }

private:
  size_type id = 0;
  bool built = 0;

public:
  void build() {
    assert(!built);
    built = 1;
    assert(root < n);
    head[root] = root;
    dfs0(root, -1, 0);
    dfs1(root, -1);
  }

private:
  void dfs0(size_type i, int p, size_type d) {
    par[i] = p;
    sub[i] = 1;
    dep[i] = d;
    for(int &j : tree[i])
      if(j != p) {
        dfs0(j, i, d + 1);
        sub[i] += sub[j];
        if(sub[j] > sub[tree[i][0]]) {
          swap(tree[i][0], j);
        }
      }
  }
  void dfs1(size_type i, int p) {
    vid[i] = id++;
    for(int j : tree[i])
      if(j != p) {
        head[j] = j == tree[i][0] ? head[i] : j;
        dfs1(j, i);
      }
  }

public:
  size_type getIn(size_type i) {
    assert(built);
    assert(i < n);
    return vid[i];
  }
  size_type getInExclusive(size_type i) { return getIn(i) + 1; }
  size_type getOut(size_type i) {
    assert(built);
    assert(i < n);
    return vid[i] + sub[i];
  }
  size_type getOutExclusive(size_type i) { return getOut(i) - 1; }
  void addEdge(size_type a, size_type b) {
    assert(built);
    assert(a < n && b < n);
    tree[a].emplace_back(b);
    tree[b].emplace_back(a);
  }
  int lca(int a, int b) {
    assert(built);
    while(1) {
      if(vid[a] > vid[b]) swap(a, b);
      if(head[a] == head[b]) return a;
      b = par[head[b]];
    }
  }
  void query(int hi, int lo, function< void(int, int) > f, bool inclusive = true) {
    assert(built);
    while(lo != -1 && dep[lo] >= dep[hi]) {
      int nex = max(vid[head[lo]], vid[hi]);
      f(nex + (nex == vid[hi] && !inclusive), vid[lo] + 1);
      lo = par[head[lo]];
    }
  }
  size_type size() { return n; }
};
/// }}}--- ///

const int N = 15e4;
vector< vector< int > > g;
int n, q;
int main() {
  ios::sync_with_stdio(false), cin.tie(0);
  cin >> n >> q;
  g.resize(n);
  for(int i = 0; i < n - 1; i++) {
    int a, b;
    cin >> a >> b;
    g[a].emplace_back(b);
    g[b].emplace_back(a);
  }

  HLD hld(g, 0);
  hld.build();
  Seg seg(n);

  int t, a, b;
  for(int i = 0; i < q; i++) {
    cin >> t >> a >> b;
    if(t == 0) { // distance
      int lca = hld.lca(a, b);
      ll now = 0;
      auto f = [&](int l, int r) { now += seg.query(l, r); };
      hld.query(lca, a, f, 0);
      hld.query(lca, b, f, 0);
      cout << now << "\n";
    } else { // add
      // seg.act(hld.getIn(a) + 1, hld.getOut(a), b);
      seg.act(hld.getInExclusive(a), hld.getOutExclusive(a) + 1, b);
    }
  }
  return 0;
}



Measured memory_bytes: 38688