#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 100005;
const int V = 101;
int p[N];
int n, v;
vector<int> adj[N];
ll dp[N][2][V];
void dfs(int node, int par) {
for (int next : adj[node]) {
if (next == par) continue;
dp[node][1][1] += p[next];
dfs(next, node);
}
for (int next : adj[node]) {
if (next == par) continue;
for (int i = 0; i <= v; i++) {
dp[node][0][i] = max(dp[node][0][i], dp[node][0][0] + dp[next][0][i]);
dp[node][0][i] = max(dp[node][0][i], dp[node][0][0] + dp[next][1][i]);
if (i != v) {
dp[node][1][i + 1] = max(dp[node][1][i + 1], dp[node][1][1] + dp[next][0][i]);
dp[node][1][i + 1] = max(dp[node][1][i + 1], dp[node][1][1] + dp[next][1][i]);
}
}
}
}
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
cin >> n >> v;
for (int i = 1; i <= n; i++) cin >> p[i];
for (int i = 0; i < n - 1; i++) {
int a, b;
cin >> a >> b;
adj[a].push_back(b);
adj[b].push_back(a);
}
ll res = 0;
for (int root = 6; root <= 6; root++) {
for (int a = 0; a <= n; a++) for (int b = 0; b < 2; b++) for (int c = 0; c <= v; c++) dp[a][b][c] = 0;
dfs(root, -1);
ll sum = 0;
for (int i = 1; i <= n; i++) sum += p[i];
for (int i = 0; i <= v; i++) {
for (int j = 0; j < 2; j++) res = max(res, dp[root][j][i]);
}
}
cout << res << "\n";
}
/*
12 2
2 3 3 8 1 5 6 7 8 3 5 4
2 1
2 7
3 4
4 7
7 6
5 6
6 8
6 9
7 10
10 11
10 12
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
2636 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
2636 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
190 ms |
170308 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
2636 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |