You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
46 lines
984 B
46 lines
984 B
#include <bits/stdc++.h>
|
|
using namespace std;
|
|
const int N = 100010;
|
|
vector<int> g[N]; // 邻接表,一个正图，一个反图
|
|
int c[N]; // 每个树洞中松鼠的数量
|
|
/*
|
|
测试用例
|
|
4
|
|
5
|
|
3
|
|
6
|
|
1
|
|
1 2
|
|
1 3
|
|
2 4
|
|
2
|
|
*/
|
|
int dfs(int u, int fa, int k) {
|
|
if (k == 0) return c[u];
|
|
int sum = c[u];
|
|
for (int i = 0; i < g[u].size(); i++) {
|
|
if (g[u][i] == fa) continue;
|
|
sum += dfs(g[u][i], u, k - 1);
|
|
}
|
|
return sum;
|
|
}
|
|
|
|
int main() {
|
|
int n; // 树洞的数量
|
|
cin >> n;
|
|
|
|
for (int i = 1; i <= n; i++) cin >> c[i]; // 每个树洞中松鼠的数量
|
|
|
|
for (int i = 1; i < n; i++) {
|
|
int a, b; // 表示两个树洞相连接
|
|
cin >> a >> b;
|
|
g[a].push_back(b); // 用邻接表保存一下某个树洞与哪两个其它树洞相连接
|
|
g[b].push_back(a);
|
|
}
|
|
|
|
int k;
|
|
cin >> k;
|
|
for (int i = 1; i <= n; i++)
|
|
cout << dfs(i, -1, k) << endl;
|
|
return 0;
|
|
} |