/*input
6 9
5 4 1 3 3 3
3 1
3 5
4 3
4 2
2 6
*/
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define int long long
#define double long double
#define f first
#define s second
#define mp make_pair
#define pb push_back
#define RE(i,n) for (int i = 1; i <= n; i++)
#define RED(i,n) for (int i = n; i > 0; i--)
#define REPS(i,n) for(int i = 1; (i*i) <= n; i++)
#define REP(i,n) for (int i = 0; i < (int)n; i++)
#define FOR(i,a,b) for (int i = a; i < b; i++)
#define REPD(i,n) for (int i = n-1; i >= 0; i--)
#define FORD(i,a,b) for (int i = a; i >= b; i--)
#define all(v) v.begin(),v.end()
#define pii pair<int,int>
#define vi vector<int>
#define vvi vector<vi>
#define print(arr) for (auto it = arr.begin(); it != arr.end(); ++it) cout << *it << " "; cout << endl;
#define debug(x) cout << x << endl;
#define debug2(x,y) cout << x << " " << y << endl;
#define debug3(x,y,z) cout << x << " " << y << " " << z << endl;
typedef tree<
int,
null_type,
less<int>,
rb_tree_tag,
tree_order_statistics_node_update>
ordered_set;
const int INF = 1e18+1;
const int MOD = 1e9+7;
const double PI = 3.14159265358979323846264338;
int raise(int a,int n,int m = MOD){
if(n == 0)return 1;
if(n == 1)return a;
int x = 1;
x *= raise(a,n/2,m);
x %= m;
x *= x;
x %= m;
if(n%2)x*= a;
x %= m;
return x;
}
int floor1(int n,int k){
if(n%k == 0 || n >= 0)return n/k;
return (n/k)-1;
}
int ceil1(int n,int k){
return floor1(n+k-1,k);
}
const int N = 1e5+1;
vector<int> adj[N];
int a[N];
int n,k;
pair<int,int> dfs(int u,int p){
int suma = a[u];
int rem = 0;
vector<int> childs;
for(int v:adj[u]){
if(v == p)continue;
pair<int,int> temp = dfs(v,u);
childs.pb(temp.f);
rem += temp.s;
rem++;
}
sort(all(childs));
REP(i,childs.size()){
if(suma+childs[i] <= k){suma+=childs[i];rem--;}
else return {suma,rem};
}
return {suma,rem};
}
void solve(){
cin >> n >> k;
RE(i,n)cin >> a[i];
RE(i,n-1){
int x,y;cin >> x >> y;
adj[x].pb(y);
adj[y].pb(x);
}
cout << dfs(1,1).s;
}
signed main(){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
//freopen(".in","r",stdin);freopen(".out","w",stdout);
int t = 1;
//cin >> t;
while(t--){
solve();
}
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
2680 KB |
Output is correct |
2 |
Correct |
4 ms |
2680 KB |
Output is correct |
3 |
Correct |
4 ms |
2680 KB |
Output is correct |
4 |
Correct |
4 ms |
2552 KB |
Output is correct |
5 |
Correct |
4 ms |
2680 KB |
Output is correct |
6 |
Correct |
4 ms |
2680 KB |
Output is correct |
7 |
Correct |
4 ms |
2680 KB |
Output is correct |
8 |
Correct |
4 ms |
2684 KB |
Output is correct |
9 |
Correct |
4 ms |
2680 KB |
Output is correct |
10 |
Correct |
4 ms |
2680 KB |
Output is correct |
11 |
Correct |
4 ms |
2680 KB |
Output is correct |
12 |
Correct |
4 ms |
2680 KB |
Output is correct |
13 |
Correct |
4 ms |
2680 KB |
Output is correct |
14 |
Correct |
4 ms |
2680 KB |
Output is correct |
15 |
Correct |
4 ms |
2680 KB |
Output is correct |
16 |
Correct |
4 ms |
2680 KB |
Output is correct |
17 |
Correct |
4 ms |
2680 KB |
Output is correct |
18 |
Correct |
4 ms |
2684 KB |
Output is correct |
19 |
Correct |
4 ms |
2768 KB |
Output is correct |
20 |
Correct |
4 ms |
2680 KB |
Output is correct |
21 |
Correct |
4 ms |
2764 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
66 ms |
19544 KB |
Output is correct |
2 |
Correct |
66 ms |
19512 KB |
Output is correct |
3 |
Correct |
66 ms |
19576 KB |
Output is correct |
4 |
Correct |
66 ms |
19576 KB |
Output is correct |
5 |
Correct |
65 ms |
19576 KB |
Output is correct |
6 |
Correct |
65 ms |
19320 KB |
Output is correct |
7 |
Correct |
65 ms |
19448 KB |
Output is correct |
8 |
Correct |
60 ms |
19064 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
2680 KB |
Output is correct |
2 |
Correct |
4 ms |
2680 KB |
Output is correct |
3 |
Correct |
4 ms |
2680 KB |
Output is correct |
4 |
Correct |
4 ms |
2552 KB |
Output is correct |
5 |
Correct |
4 ms |
2680 KB |
Output is correct |
6 |
Correct |
4 ms |
2680 KB |
Output is correct |
7 |
Correct |
4 ms |
2680 KB |
Output is correct |
8 |
Correct |
4 ms |
2684 KB |
Output is correct |
9 |
Correct |
4 ms |
2680 KB |
Output is correct |
10 |
Correct |
4 ms |
2680 KB |
Output is correct |
11 |
Correct |
4 ms |
2680 KB |
Output is correct |
12 |
Correct |
4 ms |
2680 KB |
Output is correct |
13 |
Correct |
4 ms |
2680 KB |
Output is correct |
14 |
Correct |
4 ms |
2680 KB |
Output is correct |
15 |
Correct |
4 ms |
2680 KB |
Output is correct |
16 |
Correct |
4 ms |
2680 KB |
Output is correct |
17 |
Correct |
4 ms |
2680 KB |
Output is correct |
18 |
Correct |
4 ms |
2684 KB |
Output is correct |
19 |
Correct |
4 ms |
2768 KB |
Output is correct |
20 |
Correct |
4 ms |
2680 KB |
Output is correct |
21 |
Correct |
4 ms |
2764 KB |
Output is correct |
22 |
Correct |
4 ms |
2808 KB |
Output is correct |
23 |
Correct |
5 ms |
2808 KB |
Output is correct |
24 |
Correct |
4 ms |
2808 KB |
Output is correct |
25 |
Correct |
4 ms |
2808 KB |
Output is correct |
26 |
Correct |
4 ms |
2680 KB |
Output is correct |
27 |
Correct |
4 ms |
2808 KB |
Output is correct |
28 |
Correct |
4 ms |
2680 KB |
Output is correct |
29 |
Correct |
4 ms |
2808 KB |
Output is correct |
30 |
Correct |
4 ms |
2808 KB |
Output is correct |
31 |
Correct |
4 ms |
2808 KB |
Output is correct |
32 |
Correct |
4 ms |
2808 KB |
Output is correct |
33 |
Correct |
4 ms |
2808 KB |
Output is correct |
34 |
Correct |
4 ms |
2808 KB |
Output is correct |
35 |
Correct |
4 ms |
2808 KB |
Output is correct |
36 |
Correct |
4 ms |
2680 KB |
Output is correct |
37 |
Correct |
4 ms |
2680 KB |
Output is correct |
38 |
Correct |
4 ms |
2808 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
2680 KB |
Output is correct |
2 |
Correct |
4 ms |
2680 KB |
Output is correct |
3 |
Correct |
4 ms |
2680 KB |
Output is correct |
4 |
Correct |
4 ms |
2552 KB |
Output is correct |
5 |
Correct |
4 ms |
2680 KB |
Output is correct |
6 |
Correct |
4 ms |
2680 KB |
Output is correct |
7 |
Correct |
4 ms |
2680 KB |
Output is correct |
8 |
Correct |
4 ms |
2684 KB |
Output is correct |
9 |
Correct |
4 ms |
2680 KB |
Output is correct |
10 |
Correct |
4 ms |
2680 KB |
Output is correct |
11 |
Correct |
4 ms |
2680 KB |
Output is correct |
12 |
Correct |
4 ms |
2680 KB |
Output is correct |
13 |
Correct |
4 ms |
2680 KB |
Output is correct |
14 |
Correct |
4 ms |
2680 KB |
Output is correct |
15 |
Correct |
4 ms |
2680 KB |
Output is correct |
16 |
Correct |
4 ms |
2680 KB |
Output is correct |
17 |
Correct |
4 ms |
2680 KB |
Output is correct |
18 |
Correct |
4 ms |
2684 KB |
Output is correct |
19 |
Correct |
4 ms |
2768 KB |
Output is correct |
20 |
Correct |
4 ms |
2680 KB |
Output is correct |
21 |
Correct |
4 ms |
2764 KB |
Output is correct |
22 |
Correct |
66 ms |
19544 KB |
Output is correct |
23 |
Correct |
66 ms |
19512 KB |
Output is correct |
24 |
Correct |
66 ms |
19576 KB |
Output is correct |
25 |
Correct |
66 ms |
19576 KB |
Output is correct |
26 |
Correct |
65 ms |
19576 KB |
Output is correct |
27 |
Correct |
65 ms |
19320 KB |
Output is correct |
28 |
Correct |
65 ms |
19448 KB |
Output is correct |
29 |
Correct |
60 ms |
19064 KB |
Output is correct |
30 |
Correct |
4 ms |
2808 KB |
Output is correct |
31 |
Correct |
5 ms |
2808 KB |
Output is correct |
32 |
Correct |
4 ms |
2808 KB |
Output is correct |
33 |
Correct |
4 ms |
2808 KB |
Output is correct |
34 |
Correct |
4 ms |
2680 KB |
Output is correct |
35 |
Correct |
4 ms |
2808 KB |
Output is correct |
36 |
Correct |
4 ms |
2680 KB |
Output is correct |
37 |
Correct |
4 ms |
2808 KB |
Output is correct |
38 |
Correct |
4 ms |
2808 KB |
Output is correct |
39 |
Correct |
4 ms |
2808 KB |
Output is correct |
40 |
Correct |
4 ms |
2808 KB |
Output is correct |
41 |
Correct |
4 ms |
2808 KB |
Output is correct |
42 |
Correct |
4 ms |
2808 KB |
Output is correct |
43 |
Correct |
4 ms |
2808 KB |
Output is correct |
44 |
Correct |
4 ms |
2680 KB |
Output is correct |
45 |
Correct |
4 ms |
2680 KB |
Output is correct |
46 |
Correct |
4 ms |
2808 KB |
Output is correct |
47 |
Correct |
64 ms |
12952 KB |
Output is correct |
48 |
Correct |
62 ms |
11256 KB |
Output is correct |
49 |
Correct |
62 ms |
10592 KB |
Output is correct |
50 |
Correct |
61 ms |
10232 KB |
Output is correct |
51 |
Correct |
78 ms |
9208 KB |
Output is correct |
52 |
Correct |
80 ms |
9208 KB |
Output is correct |
53 |
Correct |
80 ms |
9080 KB |
Output is correct |
54 |
Correct |
79 ms |
9080 KB |
Output is correct |
55 |
Correct |
77 ms |
8668 KB |
Output is correct |
56 |
Correct |
76 ms |
8824 KB |
Output is correct |
57 |
Correct |
46 ms |
10600 KB |
Output is correct |