Submission #1262781

#	Time	Username	Problem	Language	Result	Execution time	Memory
1262781		chikien2009	Art Exhibition (JOI18_art)	C++20	100 / 100	112 ms	19792 KiB

art

#include <bits/stdc++.h>

using namespace std;

void setup()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}

int n;
long long a[500001], b[500001], c[500001], res;
pair<long long, int> p[500001];

int main()
{
    setup();

    cin >> n;
    for (int i = 1; i <= n; ++i)
    {
        cin >> p[i].first >> p[i].second;
    }
    sort(p + 1, p + 1 + n);
    for (int i = 1; i <= n; ++i)
    {
        a[i] = p[i].first;
        b[i] = b[i - 1] + p[i].second;
        c[i] = b[i] - a[i];
    }
    for (int i = n - 1; i >= 0; --i)
    {
        c[i] = max(c[i], c[i + 1]);
    }
    for (int i = 1; i <= n; ++i)
    {
        res = max(res, c[i] - b[i - 1] + a[i]);
    }
    cout << res;
    return 0;
}

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