Submission #1267961

#	Time	Username	Problem	Language	Result	Execution time	Memory
1267961		gry3125	Jobs (BOI24_jobs)	C++20	11 / 100	198 ms	25840 KiB

Main

#include <bits/stdc++.h>
#define pb push_back
#define ll long long int
#define all(v) (v).begin(),(v).end()
#define fi first 
#define se second
using namespace std;

vector<int> adj[300005];
vector<ll> pr(300005), memo(300005);

ll dp(int v) {
	if (adj[v].size() == 0) {
		if (pr[v] <= 0) return 0LL;
		else return pr[v];
	}
	if (memo[v] != 0) {
		return max(memo[v], 0LL);
	}
	ll sum = 0;
	for (auto x : adj[v]) {
		sum += dp(x);
	}
	memo[v] = max(sum+pr[v], -1LL);
	return max(sum+pr[v], 0LL);
}

int main() {
    int n; ll s; cin >> n >> s;
    for (int i = 1; i <= n; i++) {
    	ll x; int p; 
    	cin >> x >> p;
    	adj[p].pb(i);
    	pr[i] = x;
    }
    cout << dp(0);

    return 0;
}

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