#include <bits/stdc++.h>
using namespace std;
const int NMAX = 1e5+2;
const int VMAX = 1e6+2;
using pii = pair<int, int>;
int n,q,k,ord[NMAX],val[NMAX];
vector<int> v[NMAX];
pii interval[NMAX];
set<int> occur[NMAX];

ifstream fin("arbore.in");
ofstream fout("arbore.out");

void dfs(int nod, int tata = -1){
  ord[++k] = nod;
  interval[nod] = {k, k};
  for(int fiu: v[nod]){
    if(fiu == tata){
      continue;
    }
    dfs(fiu, nod);
  }
  interval[nod].second = k;
}

int main()
{
  fin >> n >> q;
  for(int i = 1; i < n; i++){
    int x, y;
    fin >> x >> y;
    v[x].push_back(y);
    v[y].push_back(x);
  }
  dfs(1);
  while(q--){
    int t, p, s;
    fin >> t;
    if(t == 1){
      fin >> p >> s;
      // update(p, s);
      auto [l, r] = interval[p];
      for(int j = l; j <= r; j++){
        occur[val[ord[j]]].erase(ord[j]);
        val[ord[j]] += s;
        occur[val[ord[j]]].insert(ord[j]);
      }
    }else{
      fin >> s;
      // find(s);
      if(occur[s].empty()){
        fout << "-1\n";
      }else{
        fout << *occur[s].begin() << "\n";
      }
    }
  }
  return 0;
}