Submission #1050093

#	Time	Username	Problem	Language	Result	Execution time	Memory
1050093		NeroZein	Jobs (BOI24_jobs)	C++17	11 / 100	94 ms	32592 KiB

Main

#include "bits/stdc++.h"
using namespace std;
 
#ifdef Nero
#include "Deb.h"
#else
#define debug(...)
#endif
 
const int N = 3e5 + 5;
 
int x[N];
int p[N];
vector<int> g[N];
long long sum[N];
 
void dfs(int v) {
  sum[v] = x[v]; 
  for (int u : g[v]) {
    dfs(u);
    sum[v] += max(sum[u], 0LL); 
  }
}
 
int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int n;
  long long s;
  cin >> n >> s;
  for (int i = 1; i <= n; ++i) {
    cin >> x[i] >> p[i];
    g[p[i]].push_back(i);
  }
  long long cur = s;
  for (int i = 1; i <= n; ++i) {
    if (p[i] == 0) {
      dfs(i); 
      cur += max(0LL, sum[i]); 
    }
  }
  cout << cur - s << '\n';
  return 0;
}

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