Submission #914491

#	Time	Username	Problem	Language	Result	Execution time	Memory
914491		Tuanlinh123	Worst Reporter 4 (JOI21_worst_reporter4)	C++17	79 / 100	303 ms	105228 KiB

worst_reporter2

#include<bits/stdc++.h>
#define ll long long
#define pll pair<ll, ll>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define ld long double
using namespace std;

const ll maxn=200005;
ll H[maxn], C[maxn];
map <ll, ll> cnt[maxn];
vector <ll> A[maxn];

void dfs(ll u)
{
    for (ll v:A[u])
    {
        dfs(v);
        if (cnt[u].size()<cnt[v].size())
            swap(cnt[u], cnt[v]);
        for (pll i:cnt[v])
            cnt[u][i.fi]+=i.se;
    }
    ll crr=C[u]; cnt[u][H[u]]+=crr;
    auto it=cnt[u].lower_bound(H[u]);
    while (it!=cnt[u].begin())
    {
        it--;
        if ((*it).se>crr) {(*it).se-=crr;break;}
        crr-=(*it).se; it=cnt[u].erase(it);
    }
    // cout << u << "\n";
    // for (pll i:cnt[u]) cout << i.fi << " " << i.se << "\n";
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    ll n, sum=0; cin >> n;
    for (ll i=1; i<=n; i++)
    {
        ll a; cin >> a;
        if (i!=1) A[a].pb(i);
        cin >> H[i] >> C[i]; sum+=C[i];
    }
    dfs(1);
    for (pll i:cnt[1]) sum-=i.se;
    cout << sum << "\n";
}

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