#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,n) for (int i=a;i<n;i++)
#define per(i,a,n) for (int i=n-1;i>=a;i--)
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define fi first
#define se second
#define SZ(x) ((int)(x).size())
typedef vector<int> VI;
typedef basic_string<int> BI;
typedef long long ll;
typedef pair<int,int> PII;
typedef double db;
mt19937 mrand(random_device{}()); 
const ll mod=998244353;
int rnd(int x) { return mrand() % x;}
ll powmod(ll a,ll b) {ll res=1;a%=mod; assert(b>=0); for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
ll gcd(ll a,ll b) { return b?gcd(b,a%b):a;}
// head

const int N=201000;
vector<array<int,2>> e[N];
int wt[N];

int q[N],f[N],vis[N],sz[N],ms[N];
int find(int u) {
	int t=1;q[0]=u;f[u]=-1;
	rep(i,0,t) {
		u=q[i];
		rep(j,0,e[u].size()) {
			int v=e[u][j][0];
			if (!vis[v]&&v!=f[u]) f[q[t++]=v]=u;
		}
		ms[q[i]]=0;
		sz[q[i]]=1;
	}
	for (int i=t-1;i>=0;i--) {
		ms[q[i]]=max(ms[q[i]],t-sz[q[i]]);
		if (ms[q[i]]*2<=t) return q[i];
		sz[f[q[i]]]+=sz[q[i]];
		ms[f[q[i]]]=max(ms[f[q[i]]],sz[q[i]]);
	}
	return 0;
}

struct dst {
	vector<ll> a;
	int bsz,n;
	void init(vector<ll> dp) {
		a=dp;
	}
	void add(int l,int r,ll x) {
		rep(i,l,r+1) a[i]+=x;
	}
	int query(int l,int r,ll d) {
		int ans=0;
		rep(i,l,r+1) ans+=a[i]<=d;
		return ans;
	}
	ll queryp(int x) {
		return a[x];
	}
}ds[N];
int n,Q;
vector<array<int,3>> ps[N];
vector<array<int,5>> cs[N];

void solve(int x) {
	x=find(x);
	vis[x]=1;
	int tot=0;
	static int l[N],r[N],br[N];
	VI pv;
	vector<ll> dp;
	function<void(int,int,int,ll)> dfs=[&](int u,int f,int b,ll dep) {
		l[u]=tot++;
		dp.pb(dep);
		pv.pb(u);
		br[u]=b;
		for (auto [v,id]:e[u]) if (v!=f&&!vis[v]) {
			dfs(v,u,b==-1?v:b,dep+wt[id]);
			ps[id].pb({x,l[v],r[v]});
		}
		r[u]=tot-1;
	};
	dfs(x,-1,-1,0);
	ds[x].init(dp);
	for (auto u:pv) {
		cs[u].pb({x,0,tot-1,l[u],1});
		if (br[u]!=-1) cs[u].pb({x,l[br[u]],r[br[u]],l[u],-1});
	}
	for (auto [v,id]:e[x]) if (!vis[v]) {
		solve(v);
	}
}

int main() {
	scanf("%d%d",&n,&Q);
	Q=min(Q,50000);
	rep(i,1,n) {
		int u,v,w;
		scanf("%d%d%d",&u,&v,&w);
		e[u].pb({v,i});
		e[v].pb({u,i});
		wt[i]=w;
	}
	solve(1);
	rep(i,0,Q) {
		int op;
		scanf("%d",&op);
		if (op==1) {
			int id,c;
			scanf("%d%d",&id,&c);
			c-=wt[id]; wt[id]+=c;
			for (auto [x,l,r]:ps[id]) {
				ds[x].add(l,r,c);
			}
		} else {
			int x; ll d;
			scanf("%d%lld",&x,&d);
			int ans=0;
			for (auto [u,l,r,pos,sgn]:cs[x]) {
				ll v=ds[u].queryp(pos);
				ans+=sgn*ds[u].query(l,r,d-v);
			}
			printf("%d\n",ans);
		}
	}
}