#include <cstdio>
#include <cctype>
#include <algorithm>
#include <vector>
using namespace std;
const int maxn = 1e5 + 100;
inline int read(){
int x = 0;char c = getchar();
while(!isdigit(c))c = getchar();
while(isdigit(c))x = x * 10 + c - '0',c = getchar();
return x;
}
int n,k,ans,val[maxn];
vector<int> G[maxn];
inline void addedge(int u,int v){G[u].push_back(v);}
inline int dfs(int u,int faz = -1){
int res = val[u];
vector<int> vec;
for(int i = 0;i < G[u].size();i++){
int v = G[u][i];
if(v == faz)continue;
vec.push_back(dfs(v,u));
}
sort(vec.begin(),vec.end(),[](int a,int b){return a < b;});
int i = 0;
for(;i < vec.size() && res + vec[i] <= k;i++)res += vec[i];
ans += vec.size() - i;
return res;
}
int main(){
// freopen("paprike.in","r",stdin);
// freopen("paprike.out","w",stdout);
n = read(),k = read();
for(int i = 1;i <= n;i++)val[i] = read();
for(int u,v,i = 1;i < n;i++)
u = read(),v = read(),addedge(u,v),addedge(v,u);
dfs(1);
printf("%d\n",ans);
fclose(stdin);
fclose(stdout);
return 0;
}
Compilation message
paprike.cpp: In function 'int dfs(int, int)':
paprike.cpp:19:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
19 | for(int i = 0;i < G[u].size();i++){
| ~~^~~~~~~~~~~~~
paprike.cpp:26:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
26 | for(;i < vec.size() && res + vec[i] <= k;i++)res += vec[i];
| ~~^~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 2 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 3 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 4 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 5 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 6 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 7 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 8 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 9 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 10 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 11 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 12 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 13 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 14 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 15 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 16 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 17 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 18 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 19 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 20 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 21 |
Correct |
2 ms |
2688 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
49 ms |
15864 KB |
Output is correct |
| 2 |
Correct |
49 ms |
15864 KB |
Output is correct |
| 3 |
Correct |
49 ms |
15992 KB |
Output is correct |
| 4 |
Correct |
49 ms |
15736 KB |
Output is correct |
| 5 |
Correct |
49 ms |
15992 KB |
Output is correct |
| 6 |
Correct |
49 ms |
15748 KB |
Output is correct |
| 7 |
Correct |
49 ms |
15868 KB |
Output is correct |
| 8 |
Correct |
42 ms |
15864 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 2 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 3 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 4 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 5 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 6 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 7 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 8 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 9 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 10 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 11 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 12 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 13 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 14 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 15 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 16 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 17 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 18 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 19 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 20 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 21 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 22 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 23 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 24 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 25 |
Correct |
3 ms |
2816 KB |
Output is correct |
| 26 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 27 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 28 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 29 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 30 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 31 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 32 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 33 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 34 |
Correct |
3 ms |
2688 KB |
Output is correct |
| 35 |
Correct |
2 ms |
2716 KB |
Output is correct |
| 36 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 37 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 38 |
Correct |
2 ms |
2688 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 2 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 3 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 4 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 5 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 6 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 7 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 8 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 9 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 10 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 11 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 12 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 13 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 14 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 15 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 16 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 17 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 18 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 19 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 20 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 21 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 22 |
Correct |
49 ms |
15864 KB |
Output is correct |
| 23 |
Correct |
49 ms |
15864 KB |
Output is correct |
| 24 |
Correct |
49 ms |
15992 KB |
Output is correct |
| 25 |
Correct |
49 ms |
15736 KB |
Output is correct |
| 26 |
Correct |
49 ms |
15992 KB |
Output is correct |
| 27 |
Correct |
49 ms |
15748 KB |
Output is correct |
| 28 |
Correct |
49 ms |
15868 KB |
Output is correct |
| 29 |
Correct |
42 ms |
15864 KB |
Output is correct |
| 30 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 31 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 32 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 33 |
Correct |
3 ms |
2816 KB |
Output is correct |
| 34 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 35 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 36 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 37 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 38 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 39 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 40 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 41 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 42 |
Correct |
3 ms |
2688 KB |
Output is correct |
| 43 |
Correct |
2 ms |
2716 KB |
Output is correct |
| 44 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 45 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 46 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 47 |
Correct |
47 ms |
9960 KB |
Output is correct |
| 48 |
Correct |
47 ms |
8312 KB |
Output is correct |
| 49 |
Correct |
48 ms |
7800 KB |
Output is correct |
| 50 |
Correct |
48 ms |
7416 KB |
Output is correct |
| 51 |
Correct |
62 ms |
6500 KB |
Output is correct |
| 52 |
Correct |
62 ms |
6652 KB |
Output is correct |
| 53 |
Correct |
64 ms |
6520 KB |
Output is correct |
| 54 |
Correct |
61 ms |
6648 KB |
Output is correct |
| 55 |
Correct |
60 ms |
6528 KB |
Output is correct |
| 56 |
Correct |
63 ms |
6648 KB |
Output is correct |
| 57 |
Correct |
31 ms |
7536 KB |
Output is correct |
