#include <bits/stdc++.h>
using namespace std;
#define int long long
#define ld long double
#define show(x,y) cout << y << " " << #x << endl;
#define show2(x,y,i,j) cout << y << " " << #x << " " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cout << y << " " << #x << " " << j << " " << #i << " " << q << " " << #p << endl;
#define show4(x,y) for(auto it:x) cout << it << " "; cout << #y << endl;
typedef pair<int,int>pii;
//typedef pair<int,pii>pi2;
typedef array<int,4>pi2;
int n,k;
int arr[100005];
vector<int>adj[100005];
int storage[100005];
int ans=0;
void dp(int index, int par){
vector<int>v;
int counter=arr[index];
for(auto it:adj[index]){
if(it==par) continue;
dp(it,index);
v.push_back(storage[it]);
}
sort(v.begin(),v.end());
for(auto it:v){
if(counter+it<=k){
counter+=it;
}
else ans++;
}
storage[index]=counter;
}
void solve(){
cin >> n >> k;
for(int x=1;x<=n;x++){
cin >> arr[x];
}
int temp,temp2;
for(int x=0;x<n-1;x++){
cin >> temp >> temp2;
adj[temp].push_back(temp2);
adj[temp2].push_back(temp);
}
dp(1,-1);
cout << ans;
}
int32_t main(){
ios::sync_with_stdio(0);
cin.tie(0);
//freopen("redistricting.in", "r", stdin);
//freopen("redistricting.out", "w", stdout);
int t=1;
//cin >> t;
while(t--){
solve();
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
3420 KB |
Output is correct |
2 |
Correct |
1 ms |
3420 KB |
Output is correct |
3 |
Correct |
1 ms |
3164 KB |
Output is correct |
4 |
Correct |
1 ms |
3420 KB |
Output is correct |
5 |
Correct |
1 ms |
3164 KB |
Output is correct |
6 |
Correct |
1 ms |
3420 KB |
Output is correct |
7 |
Correct |
1 ms |
3164 KB |
Output is correct |
8 |
Correct |
1 ms |
3416 KB |
Output is correct |
9 |
Correct |
1 ms |
3420 KB |
Output is correct |
10 |
Correct |
2 ms |
3672 KB |
Output is correct |
11 |
Correct |
1 ms |
3420 KB |
Output is correct |
12 |
Correct |
1 ms |
3164 KB |
Output is correct |
13 |
Correct |
1 ms |
3420 KB |
Output is correct |
14 |
Correct |
1 ms |
3420 KB |
Output is correct |
15 |
Correct |
1 ms |
3164 KB |
Output is correct |
16 |
Correct |
1 ms |
3420 KB |
Output is correct |
17 |
Correct |
1 ms |
3420 KB |
Output is correct |
18 |
Correct |
1 ms |
3416 KB |
Output is correct |
19 |
Correct |
1 ms |
3420 KB |
Output is correct |
20 |
Correct |
1 ms |
3416 KB |
Output is correct |
21 |
Correct |
1 ms |
3420 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
36 ms |
20304 KB |
Output is correct |
2 |
Correct |
36 ms |
20288 KB |
Output is correct |
3 |
Correct |
35 ms |
20304 KB |
Output is correct |
4 |
Correct |
34 ms |
20344 KB |
Output is correct |
5 |
Correct |
33 ms |
20312 KB |
Output is correct |
6 |
Correct |
34 ms |
20332 KB |
Output is correct |
7 |
Correct |
34 ms |
20304 KB |
Output is correct |
8 |
Correct |
37 ms |
19944 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
3420 KB |
Output is correct |
2 |
Correct |
1 ms |
3420 KB |
Output is correct |
3 |
Correct |
1 ms |
3164 KB |
Output is correct |
4 |
Correct |
1 ms |
3420 KB |
Output is correct |
5 |
Correct |
1 ms |
3164 KB |
Output is correct |
6 |
Correct |
1 ms |
3420 KB |
Output is correct |
7 |
Correct |
1 ms |
3164 KB |
Output is correct |
8 |
Correct |
1 ms |
3416 KB |
Output is correct |
9 |
Correct |
1 ms |
3420 KB |
Output is correct |
10 |
Correct |
2 ms |
3672 KB |
Output is correct |
11 |
Correct |
1 ms |
3420 KB |
Output is correct |
12 |
Correct |
1 ms |
3164 KB |
Output is correct |
13 |
Correct |
1 ms |
3420 KB |
Output is correct |
14 |
Correct |
1 ms |
3420 KB |
Output is correct |
15 |
Correct |
1 ms |
3164 KB |
Output is correct |
16 |
Correct |
1 ms |
3420 KB |
Output is correct |
17 |
Correct |
1 ms |
3420 KB |
Output is correct |
18 |
Correct |
1 ms |
3416 KB |
Output is correct |
19 |
Correct |
1 ms |
3420 KB |
Output is correct |
20 |
Correct |
1 ms |
3416 KB |
Output is correct |
21 |
Correct |
1 ms |
3420 KB |
Output is correct |
22 |
Correct |
1 ms |
3416 KB |
Output is correct |
23 |
Correct |
1 ms |
3416 KB |
Output is correct |
24 |
Correct |
1 ms |
3484 KB |
Output is correct |
25 |
Correct |
1 ms |
3420 KB |
Output is correct |
26 |
Correct |
1 ms |
3420 KB |
Output is correct |
27 |
Correct |
1 ms |
3420 KB |
Output is correct |
28 |
Correct |
1 ms |
3420 KB |
Output is correct |
29 |
Correct |
1 ms |
3416 KB |
Output is correct |
30 |
Correct |
1 ms |
3420 KB |
Output is correct |
31 |
Correct |
1 ms |
3420 KB |
Output is correct |
32 |
Correct |
1 ms |
3420 KB |
Output is correct |
33 |
Correct |
1 ms |
3420 KB |
Output is correct |
34 |
Correct |
1 ms |
3420 KB |
Output is correct |
35 |
Correct |
1 ms |
3420 KB |
Output is correct |
36 |
Correct |
2 ms |
3420 KB |
Output is correct |
37 |
Correct |
1 ms |
3420 KB |
Output is correct |
38 |
Correct |
1 ms |
3428 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
3420 KB |
Output is correct |
2 |
Correct |
1 ms |
3420 KB |
Output is correct |
3 |
Correct |
1 ms |
3164 KB |
Output is correct |
4 |
Correct |
1 ms |
3420 KB |
Output is correct |
5 |
Correct |
1 ms |
3164 KB |
Output is correct |
6 |
Correct |
1 ms |
3420 KB |
Output is correct |
7 |
Correct |
1 ms |
3164 KB |
Output is correct |
8 |
Correct |
1 ms |
3416 KB |
Output is correct |
9 |
Correct |
1 ms |
3420 KB |
Output is correct |
10 |
Correct |
2 ms |
3672 KB |
Output is correct |
11 |
Correct |
1 ms |
3420 KB |
Output is correct |
12 |
Correct |
1 ms |
3164 KB |
Output is correct |
13 |
Correct |
1 ms |
3420 KB |
Output is correct |
14 |
Correct |
1 ms |
3420 KB |
Output is correct |
15 |
Correct |
1 ms |
3164 KB |
Output is correct |
16 |
Correct |
1 ms |
3420 KB |
Output is correct |
17 |
Correct |
1 ms |
3420 KB |
Output is correct |
18 |
Correct |
1 ms |
3416 KB |
Output is correct |
19 |
Correct |
1 ms |
3420 KB |
Output is correct |
20 |
Correct |
1 ms |
3416 KB |
Output is correct |
21 |
Correct |
1 ms |
3420 KB |
Output is correct |
22 |
Correct |
36 ms |
20304 KB |
Output is correct |
23 |
Correct |
36 ms |
20288 KB |
Output is correct |
24 |
Correct |
35 ms |
20304 KB |
Output is correct |
25 |
Correct |
34 ms |
20344 KB |
Output is correct |
26 |
Correct |
33 ms |
20312 KB |
Output is correct |
27 |
Correct |
34 ms |
20332 KB |
Output is correct |
28 |
Correct |
34 ms |
20304 KB |
Output is correct |
29 |
Correct |
37 ms |
19944 KB |
Output is correct |
30 |
Correct |
1 ms |
3416 KB |
Output is correct |
31 |
Correct |
1 ms |
3416 KB |
Output is correct |
32 |
Correct |
1 ms |
3484 KB |
Output is correct |
33 |
Correct |
1 ms |
3420 KB |
Output is correct |
34 |
Correct |
1 ms |
3420 KB |
Output is correct |
35 |
Correct |
1 ms |
3420 KB |
Output is correct |
36 |
Correct |
1 ms |
3420 KB |
Output is correct |
37 |
Correct |
1 ms |
3416 KB |
Output is correct |
38 |
Correct |
1 ms |
3420 KB |
Output is correct |
39 |
Correct |
1 ms |
3420 KB |
Output is correct |
40 |
Correct |
1 ms |
3420 KB |
Output is correct |
41 |
Correct |
1 ms |
3420 KB |
Output is correct |
42 |
Correct |
1 ms |
3420 KB |
Output is correct |
43 |
Correct |
1 ms |
3420 KB |
Output is correct |
44 |
Correct |
2 ms |
3420 KB |
Output is correct |
45 |
Correct |
1 ms |
3420 KB |
Output is correct |
46 |
Correct |
1 ms |
3428 KB |
Output is correct |
47 |
Correct |
32 ms |
13784 KB |
Output is correct |
48 |
Correct |
31 ms |
12124 KB |
Output is correct |
49 |
Correct |
31 ms |
11352 KB |
Output is correct |
50 |
Correct |
31 ms |
10960 KB |
Output is correct |
51 |
Correct |
33 ms |
10048 KB |
Output is correct |
52 |
Correct |
34 ms |
10064 KB |
Output is correct |
53 |
Correct |
32 ms |
9812 KB |
Output is correct |
54 |
Correct |
35 ms |
10076 KB |
Output is correct |
55 |
Correct |
30 ms |
9304 KB |
Output is correct |
56 |
Correct |
30 ms |
9308 KB |
Output is correct |
57 |
Correct |
23 ms |
11464 KB |
Output is correct |