#include <bits/stdc++.h>
#define int long long
using namespace std;
typedef long long ll;
const ll INF = 1e18;
const int maxn = 1e6 + 5;
const int mod = 1e9 + 7;
using pi = pair<ll, ll>;
using vi = vector<ll>;
using pii = pair<pair<ll, ll>, ll>;
#define all(x) x.begin(), x.end()
#define len(x) ll(x.size())
#define eb emplace_back
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define MIN(v) *min_element(all(v))
#define MAX(v) *max_element(all(v))
int dp[100005];
vector<int> G[100005];
int ans = 0;
int n;
int a[100005];
int root;
int k;
priority_queue<int> pq[100005];
int dfs(int u, int p)
{
dp[u] = a[u];
for (auto v : G[u])
{
if (v == p)
continue;
int d = dfs(v, u);
pq[u].push(d);
dp[u] += d;
while (dp[u] > k)
{
dp[u] -= pq[u].top();
pq[u].pop();
ans++;
}
}
return dp[u];
}
signed main()
{
cin >> n >> k;
for (int i = 1; i <= n; i++)
{
cin >> a[i];
}
for (int i = 1; i <= n - 1; i++)
{
int x, y;
cin >> x >> y;
G[x].push_back(y);
G[y].push_back(x);
}
dfs(1, 1);
cout << ans;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 2 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 3 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 4 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 5 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 6 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 7 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 8 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 9 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 10 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 11 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 12 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 13 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 14 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 15 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 16 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 17 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 18 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 19 |
Correct |
3 ms |
5792 KB |
Output is correct |
| 20 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 21 |
Correct |
3 ms |
5716 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
108 ms |
24508 KB |
Output is correct |
| 2 |
Correct |
100 ms |
24476 KB |
Output is correct |
| 3 |
Correct |
101 ms |
24460 KB |
Output is correct |
| 4 |
Correct |
100 ms |
24544 KB |
Output is correct |
| 5 |
Correct |
98 ms |
24464 KB |
Output is correct |
| 6 |
Correct |
98 ms |
24480 KB |
Output is correct |
| 7 |
Correct |
98 ms |
24440 KB |
Output is correct |
| 8 |
Correct |
86 ms |
24512 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 2 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 3 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 4 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 5 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 6 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 7 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 8 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 9 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 10 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 11 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 12 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 13 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 14 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 15 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 16 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 17 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 18 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 19 |
Correct |
3 ms |
5792 KB |
Output is correct |
| 20 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 21 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 22 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 23 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 24 |
Correct |
3 ms |
5844 KB |
Output is correct |
| 25 |
Correct |
4 ms |
5868 KB |
Output is correct |
| 26 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 27 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 28 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 29 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 30 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 31 |
Correct |
3 ms |
5740 KB |
Output is correct |
| 32 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 33 |
Correct |
4 ms |
5860 KB |
Output is correct |
| 34 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 35 |
Correct |
3 ms |
5844 KB |
Output is correct |
| 36 |
Correct |
3 ms |
5844 KB |
Output is correct |
| 37 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 38 |
Correct |
4 ms |
5844 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 2 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 3 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 4 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 5 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 6 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 7 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 8 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 9 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 10 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 11 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 12 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 13 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 14 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 15 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 16 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 17 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 18 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 19 |
Correct |
3 ms |
5792 KB |
Output is correct |
| 20 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 21 |
Correct |
3 ms |
5716 KB |
Output is correct |
| 22 |
Correct |
108 ms |
24508 KB |
Output is correct |
| 23 |
Correct |
100 ms |
24476 KB |
Output is correct |
| 24 |
Correct |
101 ms |
24460 KB |
Output is correct |
| 25 |
Correct |
100 ms |
24544 KB |
Output is correct |
| 26 |
Correct |
98 ms |
24464 KB |
Output is correct |
| 27 |
Correct |
98 ms |
24480 KB |
Output is correct |
| 28 |
Correct |
98 ms |
24440 KB |
Output is correct |
| 29 |
Correct |
86 ms |
24512 KB |
Output is correct |
| 30 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 31 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 32 |
Correct |
3 ms |
5844 KB |
Output is correct |
| 33 |
Correct |
4 ms |
5868 KB |
Output is correct |
| 34 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 35 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 36 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 37 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 38 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 39 |
Correct |
3 ms |
5740 KB |
Output is correct |
| 40 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 41 |
Correct |
4 ms |
5860 KB |
Output is correct |
| 42 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 43 |
Correct |
3 ms |
5844 KB |
Output is correct |
| 44 |
Correct |
3 ms |
5844 KB |
Output is correct |
| 45 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 46 |
Correct |
4 ms |
5844 KB |
Output is correct |
| 47 |
Correct |
108 ms |
16588 KB |
Output is correct |
| 48 |
Correct |
104 ms |
15180 KB |
Output is correct |
| 49 |
Correct |
102 ms |
14284 KB |
Output is correct |
| 50 |
Correct |
105 ms |
13964 KB |
Output is correct |
| 51 |
Correct |
110 ms |
12660 KB |
Output is correct |
| 52 |
Correct |
111 ms |
12620 KB |
Output is correct |
| 53 |
Correct |
121 ms |
12708 KB |
Output is correct |
| 54 |
Correct |
109 ms |
12716 KB |
Output is correct |
| 55 |
Correct |
95 ms |
12620 KB |
Output is correct |
| 56 |
Correct |
93 ms |
12632 KB |
Output is correct |
| 57 |
Correct |
81 ms |
11172 KB |
Output is correct |
