#include<bits/stdc++.h>
#define TASKNAME "codeforce"
#define pb push_back
#define pli pair<int,int>
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=long long;
const ll maxN=2e5;
const ll inf=1e18;
const ll mod=1e9+7;
ll res=0;
vector<ll>g[maxN];
ll ans[maxN];
ll h[maxN],k;
void dfs(ll u=1,ll p=0)
{
vector<ll>vec;
for(int v:g[u])
{
if(v!=p)
{
dfs(v,u);
vec.pb(ans[v]);
res++;
}
}
sort(vec.begin(),vec.end());
ans[u]=h[u];
for(int i=0;i<vec.size();i++)
{
if(ans[u]+vec[i]<=k)
{
ans[u]+=vec[i];
res--;
}
else break;
}
}
ll n;
void solve()
{
cin >> n>> k;
for(int i=1;i<=n;i++) cin >> h[i];
for(int i=1;i<n;i++)
{
ll u,v;
cin >> u >> v;
g[u].pb(v);
g[v].pb(u);
}
dfs();
//for(int i=1;i<=n;i++) cout << ans[i] <<' ';
cout << res;
}
int main()
{
fastio
//freopen(TASKNAME".INP","r",stdin);
//freopen(TASKNAME".OUT","w",stdout);
solve();
}
Compilation message
paprike.cpp: In function 'void dfs(ll, ll)':
paprike.cpp:31:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
31 | for(int i=0;i<vec.size();i++)
| ~^~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
4980 KB |
Output is correct |
| 2 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 3 |
Correct |
3 ms |
5020 KB |
Output is correct |
| 4 |
Correct |
3 ms |
5020 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4956 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 8 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 9 |
Correct |
3 ms |
5024 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 11 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 12 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 13 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 14 |
Correct |
3 ms |
5020 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 16 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 17 |
Correct |
3 ms |
5020 KB |
Output is correct |
| 18 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 19 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 20 |
Correct |
3 ms |
5028 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4948 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
40 ms |
20996 KB |
Output is correct |
| 2 |
Correct |
40 ms |
21068 KB |
Output is correct |
| 3 |
Correct |
45 ms |
20992 KB |
Output is correct |
| 4 |
Correct |
41 ms |
21020 KB |
Output is correct |
| 5 |
Correct |
42 ms |
21068 KB |
Output is correct |
| 6 |
Correct |
40 ms |
20908 KB |
Output is correct |
| 7 |
Correct |
41 ms |
20976 KB |
Output is correct |
| 8 |
Correct |
38 ms |
20528 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
4980 KB |
Output is correct |
| 2 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 3 |
Correct |
3 ms |
5020 KB |
Output is correct |
| 4 |
Correct |
3 ms |
5020 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4956 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 8 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 9 |
Correct |
3 ms |
5024 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 11 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 12 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 13 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 14 |
Correct |
3 ms |
5020 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 16 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 17 |
Correct |
3 ms |
5020 KB |
Output is correct |
| 18 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 19 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 20 |
Correct |
3 ms |
5028 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 22 |
Correct |
3 ms |
5056 KB |
Output is correct |
| 23 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 24 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 25 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 26 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 27 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 28 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 29 |
Correct |
3 ms |
5036 KB |
Output is correct |
| 30 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 31 |
Correct |
3 ms |
5036 KB |
Output is correct |
| 32 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 33 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 34 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 35 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 36 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 37 |
Correct |
3 ms |
5032 KB |
Output is correct |
| 38 |
Correct |
3 ms |
5076 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
4980 KB |
Output is correct |
| 2 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 3 |
Correct |
3 ms |
5020 KB |
Output is correct |
| 4 |
Correct |
3 ms |
5020 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4956 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 8 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 9 |
Correct |
3 ms |
5024 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 11 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 12 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 13 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 14 |
Correct |
3 ms |
5020 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 16 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 17 |
Correct |
3 ms |
5020 KB |
Output is correct |
| 18 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 19 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 20 |
Correct |
3 ms |
5028 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 22 |
Correct |
40 ms |
20996 KB |
Output is correct |
| 23 |
Correct |
40 ms |
21068 KB |
Output is correct |
| 24 |
Correct |
45 ms |
20992 KB |
Output is correct |
| 25 |
Correct |
41 ms |
21020 KB |
Output is correct |
| 26 |
Correct |
42 ms |
21068 KB |
Output is correct |
| 27 |
Correct |
40 ms |
20908 KB |
Output is correct |
| 28 |
Correct |
41 ms |
20976 KB |
Output is correct |
| 29 |
Correct |
38 ms |
20528 KB |
Output is correct |
| 30 |
Correct |
3 ms |
5056 KB |
Output is correct |
| 31 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 32 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 33 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 34 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 35 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 36 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 37 |
Correct |
3 ms |
5036 KB |
Output is correct |
| 38 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 39 |
Correct |
3 ms |
5036 KB |
Output is correct |
| 40 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 41 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 42 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 43 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 44 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 45 |
Correct |
3 ms |
5032 KB |
Output is correct |
| 46 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 47 |
Correct |
43 ms |
15576 KB |
Output is correct |
| 48 |
Correct |
42 ms |
14000 KB |
Output is correct |
| 49 |
Correct |
42 ms |
13440 KB |
Output is correct |
| 50 |
Correct |
43 ms |
13152 KB |
Output is correct |
| 51 |
Correct |
49 ms |
12200 KB |
Output is correct |
| 52 |
Correct |
52 ms |
12180 KB |
Output is correct |
| 53 |
Correct |
52 ms |
12240 KB |
Output is correct |
| 54 |
Correct |
62 ms |
12108 KB |
Output is correct |
| 55 |
Correct |
48 ms |
11660 KB |
Output is correct |
| 56 |
Correct |
62 ms |
11692 KB |
Output is correct |
| 57 |
Correct |
31 ms |
13420 KB |
Output is correct |
