#define ONLINE_JUDGE
#include <bits/stdc++.h>
#include <chrono>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
template <typename T>
using oset = tree<T,null_type,less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define int long long
#define pb push_back
#define ins insert
#define mp make_pair
#define mt make_tuple
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
using ll = long long;
using ld = long double;
#ifdef ONLINE_JUDGE
#define endl '\n'
#endif
#define no cout<<"NO"<<endl
#define yes cout<<"YES"<<endl
#define da cout<<"DA"<<endl
#define ne cout<<"NE"<<endl
#define send ios::sync_with_stdio(false);
#define help cin.tie(0);
void solve(int T);
const int N = 3e5 + 10;
const int M = 5e5 + 10;
const int SQRT = sqrt(N);
const int LOG = 20;
const int INF = 1e18;
const int MOD = 123456789;
const ld EPS = 1e-9;
int ans;
int n, m,k, q, l, r, x, y, z, mx, mn;
int32_t main(){
#ifndef ONLINE_JUDGE
auto begin = chrono::high_resolution_clock::now();
#endif
cout<<setprecision(7)<<fixed;
send help;
int tt = 1;
//cin>>tt; //? Comment if no testcases
for(int i = 1;i<=tt;i++){
#ifndef ONLINE_JUDGE
cout<<"Case "<<i<<": "<<endl;
#endif
solve(i);
}
#ifndef ONLINE_JUDGE
auto end = chrono::high_resolution_clock::now();
cout<<"Time: "<<chrono::duration_cast<chrono::duration<double>>(end - begin).count()<<endl;
#endif
return 0;
}
int dp[N];
vector<int> g[N];
int A[N];
void dfs(int x,int p){
dp[x] = A[x];
vector<int> vec;
for(auto u : g[x]){
if(u == p)continue;
dfs(u, x);
vec.pb(dp[u]);
}
sort(all(vec));
for(auto u : vec){
if(dp[x] + u > k)ans++;
else dp[x] += u;
}
}
void solve(int T){
cin>>n>>k;
for(int i = 0;i<n;i++)cin>>A[i];
for(int i =1 ;i<n;i++){
int u, v;
cin>>u>>v;
--u, --v;
g[u].pb(v);
g[v].pb(u);
}
dfs(0, 0);
cout<<ans<<endl;
}
//Te molam da raboti !!
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
8540 KB |
Output is correct |
2 |
Correct |
2 ms |
8540 KB |
Output is correct |
3 |
Correct |
2 ms |
8540 KB |
Output is correct |
4 |
Correct |
2 ms |
8540 KB |
Output is correct |
5 |
Correct |
2 ms |
8672 KB |
Output is correct |
6 |
Correct |
2 ms |
8540 KB |
Output is correct |
7 |
Correct |
2 ms |
8540 KB |
Output is correct |
8 |
Correct |
2 ms |
8540 KB |
Output is correct |
9 |
Correct |
3 ms |
8540 KB |
Output is correct |
10 |
Correct |
2 ms |
8540 KB |
Output is correct |
11 |
Correct |
2 ms |
8540 KB |
Output is correct |
12 |
Correct |
2 ms |
8540 KB |
Output is correct |
13 |
Correct |
2 ms |
8540 KB |
Output is correct |
14 |
Correct |
2 ms |
8584 KB |
Output is correct |
15 |
Correct |
2 ms |
8540 KB |
Output is correct |
16 |
Correct |
2 ms |
8540 KB |
Output is correct |
17 |
Correct |
2 ms |
8536 KB |
Output is correct |
18 |
Correct |
2 ms |
8792 KB |
Output is correct |
19 |
Correct |
2 ms |
8540 KB |
Output is correct |
20 |
Correct |
2 ms |
8540 KB |
Output is correct |
21 |
Correct |
2 ms |
8540 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
37 ms |
24948 KB |
Output is correct |
2 |
Correct |
37 ms |
26964 KB |
Output is correct |
3 |
Correct |
37 ms |
26932 KB |
Output is correct |
4 |
Correct |
39 ms |
26708 KB |
Output is correct |
5 |
Correct |
44 ms |
26844 KB |
Output is correct |
6 |
Correct |
36 ms |
26660 KB |
Output is correct |
7 |
Correct |
38 ms |
26788 KB |
Output is correct |
8 |
Correct |
34 ms |
26196 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
8540 KB |
Output is correct |
2 |
Correct |
2 ms |
8540 KB |
Output is correct |
3 |
Correct |
2 ms |
8540 KB |
Output is correct |
4 |
Correct |
2 ms |
8540 KB |
Output is correct |
5 |
Correct |
2 ms |
8672 KB |
Output is correct |
6 |
Correct |
2 ms |
8540 KB |
Output is correct |
7 |
Correct |
2 ms |
8540 KB |
Output is correct |
8 |
Correct |
2 ms |
8540 KB |
Output is correct |
9 |
Correct |
3 ms |
8540 KB |
Output is correct |
10 |
Correct |
2 ms |
8540 KB |
Output is correct |
11 |
Correct |
2 ms |
8540 KB |
Output is correct |
12 |
Correct |
2 ms |
8540 KB |
Output is correct |
13 |
Correct |
2 ms |
8540 KB |
Output is correct |
14 |
Correct |
2 ms |
8584 KB |
Output is correct |
15 |
Correct |
2 ms |
8540 KB |
Output is correct |
16 |
Correct |
2 ms |
8540 KB |
Output is correct |
17 |
Correct |
2 ms |
8536 KB |
Output is correct |
18 |
Correct |
2 ms |
8792 KB |
Output is correct |
19 |
Correct |
2 ms |
8540 KB |
Output is correct |
20 |
Correct |
2 ms |
8540 KB |
Output is correct |
21 |
Correct |
2 ms |
8540 KB |
Output is correct |
22 |
Correct |
2 ms |
8536 KB |
Output is correct |
23 |
Correct |
2 ms |
8536 KB |
Output is correct |
24 |
Correct |
3 ms |
8684 KB |
Output is correct |
25 |
Correct |
3 ms |
8796 KB |
Output is correct |
26 |
Correct |
2 ms |
8540 KB |
Output is correct |
27 |
Correct |
2 ms |
8540 KB |
Output is correct |
28 |
Correct |
2 ms |
8536 KB |
Output is correct |
29 |
Correct |
2 ms |
8740 KB |
Output is correct |
30 |
Correct |
2 ms |
8540 KB |
Output is correct |
31 |
Correct |
2 ms |
8540 KB |
Output is correct |
32 |
Correct |
2 ms |
8540 KB |
Output is correct |
33 |
Correct |
2 ms |
8536 KB |
Output is correct |
34 |
Correct |
2 ms |
8540 KB |
Output is correct |
35 |
Correct |
2 ms |
8540 KB |
Output is correct |
36 |
Correct |
2 ms |
8540 KB |
Output is correct |
37 |
Correct |
2 ms |
8540 KB |
Output is correct |
38 |
Correct |
2 ms |
8540 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
8540 KB |
Output is correct |
2 |
Correct |
2 ms |
8540 KB |
Output is correct |
3 |
Correct |
2 ms |
8540 KB |
Output is correct |
4 |
Correct |
2 ms |
8540 KB |
Output is correct |
5 |
Correct |
2 ms |
8672 KB |
Output is correct |
6 |
Correct |
2 ms |
8540 KB |
Output is correct |
7 |
Correct |
2 ms |
8540 KB |
Output is correct |
8 |
Correct |
2 ms |
8540 KB |
Output is correct |
9 |
Correct |
3 ms |
8540 KB |
Output is correct |
10 |
Correct |
2 ms |
8540 KB |
Output is correct |
11 |
Correct |
2 ms |
8540 KB |
Output is correct |
12 |
Correct |
2 ms |
8540 KB |
Output is correct |
13 |
Correct |
2 ms |
8540 KB |
Output is correct |
14 |
Correct |
2 ms |
8584 KB |
Output is correct |
15 |
Correct |
2 ms |
8540 KB |
Output is correct |
16 |
Correct |
2 ms |
8540 KB |
Output is correct |
17 |
Correct |
2 ms |
8536 KB |
Output is correct |
18 |
Correct |
2 ms |
8792 KB |
Output is correct |
19 |
Correct |
2 ms |
8540 KB |
Output is correct |
20 |
Correct |
2 ms |
8540 KB |
Output is correct |
21 |
Correct |
2 ms |
8540 KB |
Output is correct |
22 |
Correct |
37 ms |
24948 KB |
Output is correct |
23 |
Correct |
37 ms |
26964 KB |
Output is correct |
24 |
Correct |
37 ms |
26932 KB |
Output is correct |
25 |
Correct |
39 ms |
26708 KB |
Output is correct |
26 |
Correct |
44 ms |
26844 KB |
Output is correct |
27 |
Correct |
36 ms |
26660 KB |
Output is correct |
28 |
Correct |
38 ms |
26788 KB |
Output is correct |
29 |
Correct |
34 ms |
26196 KB |
Output is correct |
30 |
Correct |
2 ms |
8536 KB |
Output is correct |
31 |
Correct |
2 ms |
8536 KB |
Output is correct |
32 |
Correct |
3 ms |
8684 KB |
Output is correct |
33 |
Correct |
3 ms |
8796 KB |
Output is correct |
34 |
Correct |
2 ms |
8540 KB |
Output is correct |
35 |
Correct |
2 ms |
8540 KB |
Output is correct |
36 |
Correct |
2 ms |
8536 KB |
Output is correct |
37 |
Correct |
2 ms |
8740 KB |
Output is correct |
38 |
Correct |
2 ms |
8540 KB |
Output is correct |
39 |
Correct |
2 ms |
8540 KB |
Output is correct |
40 |
Correct |
2 ms |
8540 KB |
Output is correct |
41 |
Correct |
2 ms |
8536 KB |
Output is correct |
42 |
Correct |
2 ms |
8540 KB |
Output is correct |
43 |
Correct |
2 ms |
8540 KB |
Output is correct |
44 |
Correct |
2 ms |
8540 KB |
Output is correct |
45 |
Correct |
2 ms |
8540 KB |
Output is correct |
46 |
Correct |
2 ms |
8540 KB |
Output is correct |
47 |
Correct |
37 ms |
20232 KB |
Output is correct |
48 |
Correct |
35 ms |
18512 KB |
Output is correct |
49 |
Correct |
33 ms |
17756 KB |
Output is correct |
50 |
Correct |
33 ms |
17500 KB |
Output is correct |
51 |
Correct |
38 ms |
16368 KB |
Output is correct |
52 |
Correct |
36 ms |
16476 KB |
Output is correct |
53 |
Correct |
35 ms |
16464 KB |
Output is correct |
54 |
Correct |
35 ms |
16476 KB |
Output is correct |
55 |
Correct |
33 ms |
15964 KB |
Output is correct |
56 |
Correct |
34 ms |
15964 KB |
Output is correct |
57 |
Correct |
26 ms |
17864 KB |
Output is correct |