#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define x first
#define y second
struct Edge{
ll v, a, b;
};
vector<Edge> T[200005], C[200005];
ll N, Q, Ans[200005], Val[200005];
void cal1(ll u, ll p){
for(auto e : T[u]){
if(e.v == p) continue;
Val[1] += e.a;
cal1(e.v, u);
}
}
void cal2(ll u, ll p){
for(auto e : T[u]){
if(e.v == p) continue;
Val[e.v] = Val[u] - e.a + e.b;
cal2(e.v, u);
}
}
int main(){
cin.tie(0) -> sync_with_stdio(0);
cin >> N;
for(ll i = 1; i < N; i++){
ll u, v, a, b; cin >> u >> v >> a >> b;
T[u].push_back({v, a, b}); T[v].push_back({u, b, a});
}
cal1(1, -1); cal2(1, -1);
Ans[1] = *min_element(Val + 1, Val + N + 1);
cin >> Q;
while(Q--){
ll t; cin >> t;
cout << Ans[t] << '\n';
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
12632 KB |
Output is correct |
2 |
Incorrect |
2 ms |
12632 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
12632 KB |
Output is correct |
2 |
Correct |
101 ms |
32344 KB |
Output is correct |
3 |
Correct |
129 ms |
39924 KB |
Output is correct |
4 |
Correct |
92 ms |
31060 KB |
Output is correct |
5 |
Correct |
91 ms |
32000 KB |
Output is correct |
6 |
Correct |
102 ms |
33616 KB |
Output is correct |
7 |
Correct |
88 ms |
31228 KB |
Output is correct |
8 |
Correct |
118 ms |
40272 KB |
Output is correct |
9 |
Correct |
72 ms |
30448 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
12632 KB |
Output is correct |
2 |
Incorrect |
115 ms |
32196 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
12632 KB |
Output is correct |
2 |
Incorrect |
2 ms |
12632 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
12632 KB |
Output is correct |
2 |
Correct |
101 ms |
32344 KB |
Output is correct |
3 |
Correct |
129 ms |
39924 KB |
Output is correct |
4 |
Correct |
92 ms |
31060 KB |
Output is correct |
5 |
Correct |
91 ms |
32000 KB |
Output is correct |
6 |
Correct |
102 ms |
33616 KB |
Output is correct |
7 |
Correct |
88 ms |
31228 KB |
Output is correct |
8 |
Correct |
118 ms |
40272 KB |
Output is correct |
9 |
Correct |
72 ms |
30448 KB |
Output is correct |
10 |
Correct |
2 ms |
12632 KB |
Output is correct |
11 |
Incorrect |
115 ms |
32196 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
12632 KB |
Output is correct |
2 |
Incorrect |
2 ms |
12632 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |