#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=1e6+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 = 1, ans, res, ok, mx, mn = INF;
vec<int>g[N];
int dp[200001][501], b[N], a[N], tout[N];
void dfs(int v){
int t = o;
for(int to : g[v])dfs(to);
a[o] = b[v];
tout[o++] = t;
}
main(){
cin>>n>>k;
for(int i=1; i<=n; i++){
cin>>x>>b[i];
g[x].pb(i);
}
dfs(0);
for(int i=0; i<=n; i++){
for(int j=1; j<=k; j++){
dp[i][j] = -INF;
}
}
for(int i=1; i<=n; i++){
for(int j=1; j<=k; j++){
dp[i][j] = max(dp[i-1][j], dp[tout[i]-1][j-1] + a[i]);
}
}
cout<<dp[n][k];
ret 0;
}
Compilation message
biochips.cpp:41:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
41 | main(){
| ^~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
13 ms |
23808 KB |
Output is correct |
| 2 |
Correct |
14 ms |
23784 KB |
Output is correct |
| 3 |
Correct |
17 ms |
24172 KB |
Output is correct |
| 4 |
Correct |
38 ms |
59072 KB |
Output is correct |
| 5 |
Correct |
39 ms |
63528 KB |
Output is correct |
| 6 |
Correct |
37 ms |
63468 KB |
Output is correct |
| 7 |
Runtime error |
301 ms |
524292 KB |
Execution killed with signal 9 |
| 8 |
Halted |
0 ms |
0 KB |
- |
