Submission #1051053

#	Time	Username	Problem	Language	Result	Execution time	Memory
1051053		GusterGoose27	Jobs (BOI24_jobs)	C++17	11 / 100	59 ms	28244 KiB

Main

#include <bits/stdc++.h>

using namespace std;

const int MAXN = 3e5+5;
typedef long long ll;
const ll inf = 1e18;
int n;
vector<int> nxt[MAXN];
ll val[MAXN];
ll mx_val[MAXN];

ll dfs(int cur) {
	ll res = 0;
	for (int v: nxt[cur]) {
		res += dfs(v);
	}
	return max(0ll,res+val[cur]);
}

int main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	ll s;
	cin >> n >> s;
	assert(s == inf);
	vector<int> rts;
	for (int i = 0; i < n; i++) {
		int p; cin >> val[i] >> p;
		if (p == 0) rts.push_back(i);
		else nxt[p-1].push_back(i);
	}
	ll ans = 0;
	for (int i: rts) ans += dfs(i);
	cout << ans << '\n';
}

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