Submission #716595

#	Time	Username	Problem	Language	Result	Execution time	Memory
716595		TheSahib	Art Exhibition (JOI18_art)	C++17	100 / 100	761 ms	42916 KiB

art

#include <bits/stdc++.h>

#define ll long long
#define oo 1e9
#define pii pair<ll, ll>

using namespace std;



int main()
{
    int n; cin >> n;
    pii arr[n + 1];
    arr[0] = {0, 0};
    for (int i = 1; i <= n; i++)
    {
        cin >> arr[i].first >> arr[i].second;
    }
    sort(arr, arr + n + 1);
    ll pre[n + 1];
    pre[0] = 0;
    for (int i = 1; i <= n; i++)
    {
        pre[i] = pre[i - 1] + arr[i].second;
    }
    
    multiset<ll> s;
    for (int i = 1; i <= n; i++)
    {
        s.insert(pre[i] - arr[i].first);
    }
    ll ans = 0;
    for (int i = 1; i <= n; i++)
    {
        auto itr = prev(s.end());
        ans = max(ans, (*itr) - pre[i - 1] + arr[i].first);
        s.erase(s.find(pre[i] - arr[i].first));
    }
    cout << ans << '\n';
}

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 50 / 50