Submission #1095131

#	Time	Username	Problem	Language	Result	Execution time	Memory
1095131		epicci23	Jobs (BOI24_jobs)	C++17	14 / 100	5 ms	860 KiB

Main

#include "bits/stdc++.h"
#define int long long
#define all(v) v.begin() , v.end()
#define sz(a) (int)a.size()
using namespace std;


const int N = 2e3 + 5;
const int INF = 1e18;
int n,s;
vector<int> v[N];
int par[N],ar[N],vis[N];
int bak=-1,xd=0;

void dfs(int c=0LL,int mini=0LL,int cur=0LL){
  if(mini<-s) return;
  if(mini>=-s && cur>=xd && !vis[c]){
  	xd=cur;
  	bak=c;
  }
  for(int x:v[c]) dfs(x,min(mini,cur+ar[x]),cur+ar[x]);
}

void _(){
  cin >> n >> s;
  int lol=s;
  for(int i=1;i<=n;i++){
  	cin >> ar[i] >> par[i];
  	v[par[i]].push_back(i);
  }
  vis[0]=1;
  while(true){
    bak=-1;xd=0;
    dfs();
    if(bak==-1) break;
    int c=bak;
    while(c>0){
      s+=ar[c];
      ar[c]=0;
      vis[c]=1;
      c=par[c];
    }
  }

  cout << s-lol << '\n';
}

int32_t main(){
  cin.tie(0); ios::sync_with_stdio(0);
  int tc=1;//cin >> tc;
  while(tc--) _();
  return 0;
}

• Subtask 1: 0 / 11
• Subtask 2: 14 / 14
• Subtask 3: 0 / 15
• Subtask 4: 0 / 29
• Subtask 5: 0 / 31