Submission #591404

#	Time	Username	Problem	Language	Result	Execution time	Memory
591404		shrimb	Art Exhibition (JOI18_art)	C++17	100 / 100	437 ms	44336 KiB

art

#pragma GCC optimize ("Ofast")
#pragma GCC target ("avx,avx2,fma")

#include"bits/stdc++.h"
using namespace std;

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

template<class x>
using ordered_set = tree<x, null_type,less<x>, rb_tree_tag,tree_order_statistics_node_update>;

#define int long long
#define endl '\n'
#define mod 1000000007
//\
#define mod 1686876991

signed main () {
    cin.tie(0)->sync_with_stdio(0);

    int n;
    cin >> n;
    pair<int,int> a[n];
    for (auto &[x, y] : a) cin >> x >> y;
    sort(a, a + n);

    multiset<int> s = {0};

    int sm = 0;
    for (int i = n - 1 ; i > 0 ; i--) {
        sm += a[i].second + a[i - 1].first - a[i].first;
        s.insert(sm);
    }
    sm += a[0].second;
    int ans = 0;
    for (int i = 0 ; i < n ; i++) ans = max(ans, a[i].second);
    for (int i = 0 ; i < n - 1 ; i++) {
        ans = max(ans, sm - *s.begin());
        sm -= a[i].second;
        s.erase(s.find(sm));
        sm += a[i + 1].first;
        sm -= a[i].first;
    }
    cout << ans << endl;
}

Compilation message (stderr)

art.cpp:17:1: warning: multi-line comment [-Wcomment]
   17 | //\
      | ^

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