#include <bits/stdc++.h>
using namespace std;
#define ll long long
const ll mmod = 998244353;
#define vl vector<long long>
#define vll vector<vector<long long>>
#define pl pair<long long, long long>
#define vb vector<bool>
vector<vector<vl>> graf;
ll s = 0;
ll optimum = 2e18;
ll root = 0;
void dfs1(ll v, ll p){
for(auto x : graf[v]){
if (x[0] != p){
s += x[1];
dfs1(x[0], v);
}
}
}
void dfs2(ll v, ll p, ll sub){
if (sub < optimum){
optimum = sub;
root = v;
}
for(auto x : graf[v]){
if (x[0] != p){
dfs2(x[0], v, sub - x[1] + x[2]);
}
}
}
int main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
ll n;
cin >> n;
graf.resize(n);
for (ll i = 0; i < n-1; i++){
ll a,b,c,d;
cin >>a >>b >>c >>d;
a--; b--;
graf[a].push_back({b,c, d});
graf[b].push_back({a,d, c});
}
dfs1(0, -1);
dfs2(0, -1, s);
ll q;
cin >>q;
for (ll i = 0; i < q; i++){
ll e;
cin >> e;
cout << optimum <<"\n";
}
return 0;
}
