#include<bits/stdc++.h>
using namespace std;
typedef long long llint;
const int MAXN = 100005;
llint n, k;
llint val[MAXN], dp[MAXN];
vector <int> v[MAXN];
llint dfs (int x, int rod) {
llint res = val[x];
vector <llint> r;
for (int i=0; i<v[x].size(); i++) {
int sus = v[x][i];
if (sus == rod) continue;
r.push_back(dfs(sus, x));
res += r.back();
dp[x] += dp[sus];
}
sort(r.begin(), r.end());
while (res > k) {
res -= r.back();
dp[x]++;
r.pop_back();
}
return res;
}
int main () {
ios_base::sync_with_stdio(false);
cin.tie(0);
cin >> n >> k;
for (int i=1; i<=n; i++) {
cin >> val[i];
}
for (int i=0; i<n-1; i++) {
int a, b;
cin >> a >> b;
v[a].push_back(b);
v[b].push_back(a);
}
dfs(1, 0);
cout << dp[1];
return 0;
}
Compilation message
paprike.cpp: In function 'llint dfs(int, int)':
paprike.cpp:16:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i=0; i<v[x].size(); i++) {
~^~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
2688 KB |
Output is correct |
2 |
Correct |
4 ms |
2688 KB |
Output is correct |
3 |
Correct |
4 ms |
2688 KB |
Output is correct |
4 |
Correct |
4 ms |
2688 KB |
Output is correct |
5 |
Correct |
4 ms |
2688 KB |
Output is correct |
6 |
Correct |
4 ms |
2688 KB |
Output is correct |
7 |
Correct |
3 ms |
2688 KB |
Output is correct |
8 |
Correct |
4 ms |
2688 KB |
Output is correct |
9 |
Correct |
4 ms |
2688 KB |
Output is correct |
10 |
Correct |
4 ms |
2816 KB |
Output is correct |
11 |
Correct |
4 ms |
2688 KB |
Output is correct |
12 |
Correct |
4 ms |
2688 KB |
Output is correct |
13 |
Correct |
4 ms |
2688 KB |
Output is correct |
14 |
Correct |
4 ms |
2716 KB |
Output is correct |
15 |
Correct |
4 ms |
2688 KB |
Output is correct |
16 |
Correct |
4 ms |
2688 KB |
Output is correct |
17 |
Correct |
4 ms |
2688 KB |
Output is correct |
18 |
Correct |
5 ms |
2688 KB |
Output is correct |
19 |
Correct |
5 ms |
2688 KB |
Output is correct |
20 |
Correct |
4 ms |
2688 KB |
Output is correct |
21 |
Correct |
5 ms |
2688 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
66 ms |
21880 KB |
Output is correct |
2 |
Correct |
68 ms |
21892 KB |
Output is correct |
3 |
Correct |
91 ms |
21980 KB |
Output is correct |
4 |
Correct |
77 ms |
21888 KB |
Output is correct |
5 |
Correct |
72 ms |
21880 KB |
Output is correct |
6 |
Correct |
72 ms |
21880 KB |
Output is correct |
7 |
Correct |
70 ms |
21872 KB |
Output is correct |
8 |
Correct |
93 ms |
21368 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
2688 KB |
Output is correct |
2 |
Correct |
4 ms |
2688 KB |
Output is correct |
3 |
Correct |
4 ms |
2688 KB |
Output is correct |
4 |
Correct |
4 ms |
2688 KB |
Output is correct |
5 |
Correct |
4 ms |
2688 KB |
Output is correct |
6 |
Correct |
4 ms |
2688 KB |
Output is correct |
7 |
Correct |
3 ms |
2688 KB |
Output is correct |
8 |
Correct |
4 ms |
2688 KB |
Output is correct |
9 |
Correct |
4 ms |
2688 KB |
Output is correct |
10 |
Correct |
4 ms |
2816 KB |
Output is correct |
11 |
Correct |
4 ms |
2688 KB |
Output is correct |
12 |
Correct |
4 ms |
2688 KB |
Output is correct |
13 |
Correct |
4 ms |
2688 KB |
Output is correct |
14 |
Correct |
4 ms |
2716 KB |
Output is correct |
15 |
Correct |
4 ms |
2688 KB |
Output is correct |
16 |
Correct |
4 ms |
2688 KB |
Output is correct |
17 |
Correct |
4 ms |
2688 KB |
Output is correct |
18 |
Correct |
5 ms |
2688 KB |
Output is correct |
19 |
Correct |
5 ms |
2688 KB |
Output is correct |
20 |
Correct |
4 ms |
2688 KB |
Output is correct |
21 |
Correct |
5 ms |
2688 KB |
Output is correct |
22 |
Correct |
6 ms |
2816 KB |
Output is correct |
23 |
Correct |
6 ms |
2816 KB |
Output is correct |
24 |
Correct |
6 ms |
2816 KB |
Output is correct |
25 |
Correct |
7 ms |
2688 KB |
Output is correct |
26 |
Correct |
6 ms |
2816 KB |
Output is correct |
27 |
Correct |
5 ms |
2892 KB |
Output is correct |
28 |
Correct |
6 ms |
2816 KB |
Output is correct |
29 |
Correct |
6 ms |
2816 KB |
Output is correct |
30 |
Correct |
6 ms |
2816 KB |
Output is correct |
31 |
Correct |
5 ms |
2688 KB |
Output is correct |
32 |
Correct |
6 ms |
2816 KB |
Output is correct |
33 |
Correct |
5 ms |
2688 KB |
Output is correct |
34 |
Correct |
5 ms |
2816 KB |
Output is correct |
35 |
Correct |
6 ms |
2816 KB |
Output is correct |
36 |
Correct |
5 ms |
2816 KB |
Output is correct |
37 |
Correct |
5 ms |
2816 KB |
Output is correct |
38 |
Correct |
5 ms |
2816 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
2688 KB |
Output is correct |
2 |
Correct |
4 ms |
2688 KB |
Output is correct |
3 |
Correct |
4 ms |
2688 KB |
Output is correct |
4 |
Correct |
4 ms |
2688 KB |
Output is correct |
5 |
Correct |
4 ms |
2688 KB |
Output is correct |
6 |
Correct |
4 ms |
2688 KB |
Output is correct |
7 |
Correct |
3 ms |
2688 KB |
Output is correct |
8 |
Correct |
4 ms |
2688 KB |
Output is correct |
9 |
Correct |
4 ms |
2688 KB |
Output is correct |
10 |
Correct |
4 ms |
2816 KB |
Output is correct |
11 |
Correct |
4 ms |
2688 KB |
Output is correct |
12 |
Correct |
4 ms |
2688 KB |
Output is correct |
13 |
Correct |
4 ms |
2688 KB |
Output is correct |
14 |
Correct |
4 ms |
2716 KB |
Output is correct |
15 |
Correct |
4 ms |
2688 KB |
Output is correct |
16 |
Correct |
4 ms |
2688 KB |
Output is correct |
17 |
Correct |
4 ms |
2688 KB |
Output is correct |
18 |
Correct |
5 ms |
2688 KB |
Output is correct |
19 |
Correct |
5 ms |
2688 KB |
Output is correct |
20 |
Correct |
4 ms |
2688 KB |
Output is correct |
21 |
Correct |
5 ms |
2688 KB |
Output is correct |
22 |
Correct |
66 ms |
21880 KB |
Output is correct |
23 |
Correct |
68 ms |
21892 KB |
Output is correct |
24 |
Correct |
91 ms |
21980 KB |
Output is correct |
25 |
Correct |
77 ms |
21888 KB |
Output is correct |
26 |
Correct |
72 ms |
21880 KB |
Output is correct |
27 |
Correct |
72 ms |
21880 KB |
Output is correct |
28 |
Correct |
70 ms |
21872 KB |
Output is correct |
29 |
Correct |
93 ms |
21368 KB |
Output is correct |
30 |
Correct |
6 ms |
2816 KB |
Output is correct |
31 |
Correct |
6 ms |
2816 KB |
Output is correct |
32 |
Correct |
6 ms |
2816 KB |
Output is correct |
33 |
Correct |
7 ms |
2688 KB |
Output is correct |
34 |
Correct |
6 ms |
2816 KB |
Output is correct |
35 |
Correct |
5 ms |
2892 KB |
Output is correct |
36 |
Correct |
6 ms |
2816 KB |
Output is correct |
37 |
Correct |
6 ms |
2816 KB |
Output is correct |
38 |
Correct |
6 ms |
2816 KB |
Output is correct |
39 |
Correct |
5 ms |
2688 KB |
Output is correct |
40 |
Correct |
6 ms |
2816 KB |
Output is correct |
41 |
Correct |
5 ms |
2688 KB |
Output is correct |
42 |
Correct |
5 ms |
2816 KB |
Output is correct |
43 |
Correct |
6 ms |
2816 KB |
Output is correct |
44 |
Correct |
5 ms |
2816 KB |
Output is correct |
45 |
Correct |
5 ms |
2816 KB |
Output is correct |
46 |
Correct |
5 ms |
2816 KB |
Output is correct |
47 |
Correct |
69 ms |
13944 KB |
Output is correct |
48 |
Correct |
70 ms |
11896 KB |
Output is correct |
49 |
Correct |
67 ms |
11128 KB |
Output is correct |
50 |
Correct |
74 ms |
10748 KB |
Output is correct |
51 |
Correct |
128 ms |
9488 KB |
Output is correct |
52 |
Correct |
128 ms |
9540 KB |
Output is correct |
53 |
Correct |
103 ms |
9436 KB |
Output is correct |
54 |
Correct |
113 ms |
9400 KB |
Output is correct |
55 |
Correct |
129 ms |
8824 KB |
Output is correct |
56 |
Correct |
100 ms |
8824 KB |
Output is correct |
57 |
Correct |
49 ms |
9844 KB |
Output is correct |