Submission #1313340

#	Time	Username	Problem	Language	Result	Execution time	Memory
1313340		anteknne	Worst Reporter 4 (JOI21_worst_reporter4)	C++20	0 / 100	4 ms	1992 KiB

worst_reporter2

#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

typedef long long ll;
typedef long double ld;

#define pb push_back
#define pii pair<int, int>
#define pll pair<ll, ll>
#define st first
#define nd second
#define ordered_set tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>
#define debug false

const int MAXN = 200 * 1000 + 17;
const int INF = 1000 * 1000 * 1000;
int a[MAXN];
int h[MAXN];
ll c[MAXN];
vector<int> graf[MAXN];

map<int, ll>* DFS (int v) {
    map<int, ll>* dp1 = new map<int, ll>();
    for (auto x : graf[v]) {
        map<int, ll>* dp2 = DFS(x);
        if (int(dp1->size()) < int(dp2->size())) {
            swap(dp1, dp2);
        }
        for (auto y : *dp2) {
            (*dp1)[y.st] += y.nd;
        }
    }
    (*dp1)[h[v]] += c[v];

    ll dod = c[v];
    while (!dp1->empty() && dod > 0) {
        auto it = dp1->begin();
        if ((*it).st >= h[v]) {
            break;
        }

        ll x = min(dod, it->nd);
        dod -= x;
        it->nd -= x;
        if (it->nd == 0) {
            dp1->erase(it);
        }

    }
    return dp1;
}

int main () {
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    int n;
    cin >> n;

    for (int i = 1; i <= n; i ++) {
        cin >> a[i] >> h[i] >> c[i];
    }

    for (int i = 2; i <= n; i ++) {
        graf[a[i]].pb(i);
    }

    ll wyn = 0;
    map<int, ll>* dp = DFS(1);

    for (int i = 1; i <= n; i ++) {
        wyn += c[i];
    }
    for (auto x : *dp) {
        wyn -= x.nd;
    }

    cout << wyn << "\n";

    return 0;
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 65
• Subtask 3: 0 / 21