#include <bits/stdc++.h>
// author: vusal
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
template<typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define int long long
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int oo = 1e18 + 9;
const int sz = 1e5+7;
const int MOD = 1e9+7;
int n, m;
vector<array<int,3>>g[sz];
vector<pair<int,int>>v[sz];
vector<bool>vis(sz, false);
void solve() {
cin >> n >> m;
for(int i = 0; i < n -1; i++)
{
int u, v, l, r;
cin >> u >> v >> l >> r;
g[u].push_back({v, l, r});
g[v].push_back({u, l, r});
}
queue<int>q;
q.push(1);
vis[1] = 1;
while(!q.empty())
{
int u = q.front();q.pop();
for(auto &[to, l, r] : g[u])
{
if(vis[to]) continue;
v[to] = v[u];
v[to].push_back(make_pair(l, r));
q.push(to);
vis[to] = 1;
}
}
for(int i = 2; i <= n; i++)
{
int mnl = oo, mxr = -oo;
for(auto [l, r] : v[i])
{
mnl = min(mnl, l);
mxr = max(mxr, r);
}
cout << mxr - mnl + 1 << endl;
}
}
signed main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int tc = 1;
// cin >> tc;
for(int i = 1; i <= tc; i++)
{
//cout << "Case " << i << ":";
solve();
}
return 0;
}
