Submission #621489

#	Time	Username	Problem	Language	Result	Execution time	Memory
621489		elkernos	Art Exhibition (JOI18_art)	C++17	100 / 100	218 ms	20948 KiB

art

#include <bits/stdc++.h>

using namespace std;

#define int long long
#define x first
#define y second

int32_t main()
{
    cin.tie(0)->sync_with_stdio(0);
    int n;
    cin >> n;
    vector<pair<int, int>> p(n + 1);
    for(int i = 1; i <= n; i++) {
        cin >> p[i].x >> p[i].y;
    }
    sort(p.begin() + 1, p.end());
    const int oo = 1e18;
    int pref = 0, maxi = -oo, ans = -oo;
    for(int i = 1; i <= n; ++i) {
        pref += p[i].y;
        ans = max({ans, pref + maxi - p[i].x, p[i].y});
        maxi = max(maxi, p[i].x - (pref - p[i].y));
    }
    cout << ans << '\n';
}

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