#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define ar array
#define fr first
#define sc second
#define vec vector
#define ret return
#define ins insert
#define mk make_pair
#define pb push_back
#define pf push_front
#define pob pop_back
#define pof pop_front
#define int long long
#define pii pair<int,int>
#define all(s) s.begin(), s.end()
#define allr(s) s.rbegin(), s.rend()
#define NeedForSpeed ios::sync_with_stdio(0),cin.tie(0);
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
const int N=2e5
+12,INF=1e9,mod = 1e9+7;
bool iswowel(char n){ n = toupper(n); if(n == 'A' || n == 'O' || n == 'U' || n == 'E' || n == 'I') return true; else return false;}
int n, m, k, x, y, l, r, o, ans, res, ok, mx, mn = INF;
int a[N][505], b[N],d[N], c,sz[N], used[N];
vec<int>g[N];
void dfs(int v){
int sum=0;
for(int to : g[v]){
dfs(to);
sz[v]+=sz[to];
sum += g[to].size();
for(int i=min(sz[v],k); i>=0; i--){
int mx=0;
for(int j=min(sz[v],k); j>=0; j--){
if (j>i)continue;
mx = max(mx, a[to][j] + a[v][i - j]);
}
d[i] = mx;
}
for(int i=min(sz[v],k); i>=0; i--)a[v][i] = d[i];
}
if (g[v].size() == 0)sz[v]=1;
a[v][1] = max(a[v][1],b[v]);
}
main(){
cin>>n>>k;
for(int i=1; i<=n; i++){
cin>>x>>y;
b[i] = y;
g[x].pb(i);
}
dfs(0);
cout <<a[g[0][0]][k];
ret 0;
}
Compilation message
biochips.cpp:56:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
56 | main(){
| ^~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
4940 KB |
Output is correct |
| 2 |
Correct |
2 ms |
5068 KB |
Output is correct |
| 3 |
Correct |
3 ms |
5324 KB |
Output is correct |
| 4 |
Correct |
30 ms |
40396 KB |
Output is correct |
| 5 |
Correct |
35 ms |
44848 KB |
Output is correct |
| 6 |
Correct |
38 ms |
44856 KB |
Output is correct |
| 7 |
Execution timed out |
2097 ms |
181684 KB |
Time limit exceeded |
| 8 |
Halted |
0 ms |
0 KB |
- |
