Submission #853314

#	Time	Username	Problem	Language	Result	Execution time	Memory
853314		thinknoexit	Art Exhibition (JOI18_art)	C++17	100 / 100	141 ms	21296 KiB

art

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
pair<ll, ll> a[500001];
int main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    int n;
    cin >> n;
    for (int i = 1;i <= n;i++) {
        cin >> a[i].first >> a[i].second;
    }
    sort(a + 1, a + 1 + n);
    ll ans = LLONG_MIN, mx = LLONG_MIN, now = 0;
    for (int i = 1;i <= n;i++) {
        mx = max(mx, -now + a[i].first);
        now += a[i].second;
        ans = max(ans, now - a[i].first + mx);
    }
    cout << ans;
    return 0;
}

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