#include <algorithm>
#include <bitset>
#include <cassert>
#include <chrono>
#include <climits>
#include <cmath>
#include <complex>
#include <cstring>
#include <deque>
#include <functional>
#include <iostream>
#include <iomanip>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#include <cstdint>
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef pair<int,int> pii;
#define MP make_pair
#define PB push_back
#define inf 1000000007
#define rep(i,n) for(int i = 0; i < (int)(n); ++i)
#define all(x) (x).begin(),(x).end()

template<typename A, size_t N, typename T>
void Fill(A (&array)[N], const T &val){
    std::fill( (T*)array, (T*)(array+N), val );
}
 
template<class T> inline bool chmax(T &a, T b){
    if(a<b){
        a = b;
        return true;
    }
    return false;
}

template<class T> inline bool chmin(T &a, T b){
    if(a>b){
        a = b;
        return true;
    }
    return false;
}

template<typename T> class segtree {
private:
    int n,sz;
    vector<T> node;
public:
    void init(const vector<T>& v){
        sz = (int)v.size();
        n = 1;
        while(n < sz){
            n *= 2;
        }
        node.assign(2*n,0);
        for(int i = 0; i < sz; i++){
            node[i+n] = v[i];
        }
        for(int i=n-1; i>=1; i--){
            node[i] =node[2*i] + node[2*i+1];
        }
    }
    void update(int k,T a){
    	node[k+=n] += a;
    	while(k>>=1){
            node[k] = node[2*k]+node[2*k+1];
    	}
    }
    T query(int a,int b){
        T res1 = 0;
        T res2 = 0;
        a += n, b += n;
        while(a != b){
            if(a & 1) res1 = res1+node[a++];
            if(b & 1) res2 = node[--b]+ res2;
            a >>= 1, b>>= 1;
        }
        return res1+res2;
    }
    void print(){
        for(int i = 0; i < sz; i++){
            cout << query(i,i+1) << " ";
        }
        cout << endl;
    }
};
 
//座標の型, 値の型
template<typename CandidateType, typename ValueType> class RangeTree
{
public:
    static_assert(std::is_integral<CandidateType>::value, "Integral required.");
private:
    using CT = CandidateType;
    using VT = ValueType;
    using pcc = pair<CT, CT>;
    using pci = pair<CT, int>;
    int n, sz;
    vector<segtree<VT> > seg;
    // y座標, x座標
    vector<vector<pcc> > yx;
    // y座標, x座標
    vector<pcc> sorted;
    void update_(int id, const CT x, const CT y, const VT val) {
        id += n-1;
        const int yid = lower_bound(all(yx[id]), pcc(y, x)) - yx[id].begin();
        seg[id].update(yid, val);
        while(id > 0){
            id = (id - 1) / 2;
            const int yid = lower_bound(all(yx[id]), pcc(y, x)) - yx[id].begin();
            seg[id].update(yid, val);
        }
    }
    VT query(const int lxid, const int rxid, const CT ly, const CT ry, const int k, const int l, const int r) {
        if(r <= lxid || rxid <= l) return 0;
        if(lxid <= l && r <= rxid){
            const int lyid = lower_bound(all(yx[k]), pcc(ly, numeric_limits<CT>::min())) - yx[k].begin();
            const int ryid = upper_bound(all(yx[k]), pcc(ry, numeric_limits<CT>::min())) - yx[k].begin();
            return (lyid >= ryid) ? 0 : seg[k].query(lyid, ryid);
        }else{
            return query(lxid, rxid, ly, ry, 2*k+1, l, (l+r)/2) + query(lxid, rxid, ly, ry, 2*k+2, (l+r)/2, r);
        }
    }
public:
    // 座標, 点の値
    RangeTree(const vector<pcc>& cand, const vector<VT>& val) : n(1), sz((int)cand.size()), sorted(sz){
        while(n < sz) n *= 2;
        for(int i = 0; i < sz; ++i){
            sorted[i] = {cand[i].first, i};
        }
        sort(all(sorted), [&](const pcc& a, const pcc& b){
            return (a.first == b.first) ? (cand[a.second].second < cand[b.second].second) : (a.first < b.first);
        });
        yx.resize(2*n-1), seg.resize(2*n-1);
        for(int i = 0; i < sz; ++i){
            yx[i+n-1] = {{sorted[i].second, sorted[i].first}};
            vector<VT> arg = {val[sorted[i].second]};
            seg[i+n-1].init(arg);
            sorted[i].second = cand[sorted[i].second].second;
        }
        for(int i = n-2; i >= 0; --i){
            yx[i].resize((int)yx[2*i+1].size() + (int)yx[2*i+2].size());
            if(yx[i].empty()) continue;
            merge(all(yx[2*i+1]), all(yx[2*i+2]), yx[i].begin(), [&](const pcc& a, const pcc& b){
                return (cand[a.first].second == cand[b.first].second)
                        ? (a.second < b.second) : (cand[a.first].second < cand[b.first].second);
            });
            vector<VT> arg((int)yx[i].size());
            for(int j = 0; j < (int)yx[i].size(); ++j){
                arg[j] = val[yx[i][j].first];
            }
            seg[i].init(arg);
        }
        for(int i = 0; i < 2*n-1; ++i){
            for(pcc& e : yx[i]){
                e.first = cand[e.first].second;
            }
        }
    }
    // 点 (x,y) の更新を行う
    void update(const CT x, const CT y, const VT val){
        const int id = lower_bound(all(sorted), pcc(x, y)) - sorted.begin();
        return update_(id, x, y, val);
    }
    // [lx,rx) × [ly,ry) の長方形領域のクエリに答える
    VT query(const CT lx, const CT ly, const CT rx, const CT ry){
        const int lxid = lower_bound(all(sorted), pcc(lx, numeric_limits<CT>::min())) - sorted.begin();
        const int rxid = upper_bound(all(sorted), pcc(rx, numeric_limits<CT>::min())) - sorted.begin();
        return (lxid >= rxid) ? 0 : query(lxid, rxid, ly, ry, 0, 0, n);
    }
};
 
vector<vector<pair<int,ll> > > g;

ll parent[17][50000];
ll dep[50000];
int in[50000];
int out[50000];
int te;
void init(int id,int pre){
    in[id] = te;
    te++;
    for(auto x:g[id]){
        if(x.first == pre)continue;
        dep[x.first] = dep[id] + x.second;
        parent[0][x.first] = id;
        init(x.first,id);
    }
    out[id] = te;
    te++;
}



int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n,Q;
    cin >> n >> Q;
    g.resize(n);
    rep(i,n-1){
        int a,b;
        ll c;
        cin >> a >> b >> c;
        a--;b--;
        g[a].push_back({b,c});
        g[b].push_back({a,c});
    }
    init(0,-1);
    // rep(i,n){
    //     cerr << in[i] << " " << out[i] << endl;
    // }
    vector<pair<pair<ll,ll>,int> > p;
    vector<pair<ll,ll> > cand;
    cand.push_back({0,0});
    rep(tt,Q){
        int type,V;
        ll T,L;
        cin >> type >> V >> T >> L;
        V--;
        if(type==0){
            p.push_back({{T+dep[V],in[V]},1});cand.push_back({T+dep[V],in[V]});
            ll TT = T+dep[V];
            while(V!=0){
                bool ff = 0;
                for(int i=16;i>=0;i--){
                    int P = parent[i][V];
                    if(dep[V]-dep[P] <= L){
                        ff = 1;
                        L -= dep[V]-dep[P];
                        V = P;
                        break;
                    }
                }
                if(!ff){
                    break;
                }
            }
            if(V!=0){
                p.push_back({{TT,in[V]-1},-1});
                cand.push_back({TT,in[V]-1});
            }
        }else{
            p.push_back({{T+dep[V],V},0});
            cand.push_back({T+dep[V],in[V]});
            cand.push_back({T+dep[V],out[V]});

        }
    }
    sort(all(cand));
    cand.erase(unique(all(cand)),cand.end());
    vector<int> ppp((int)cand.size());
    RangeTree<ll,int> RT(cand,ppp);
    for(auto&x:p){
        if(x.second!=0){
            RT.update(x.first.first,x.first.second,x.second);
            // cerr << x.first.first << " " << x.first.second << " " << x.second << endl;
        }else{
            // cerr << x.first.second << endl;
            // cerr << "Q:" << 0 << " " << in[x.first.second] << " " << x.first.first+1 << " " << out[x.first.second] + 1 << endl;
            cout << RT.query(0,in[x.first.second],x.first.first+1,out[x.first.second]+1) << "\n";
        }
        
    }
    return 0;
}