Submission #1321584

#	Time	Username	Problem	Language	Result	Execution time	Memory
1321584		AMel0n	Art Exhibition (JOI18_art)	C++20	100 / 100	129 ms	8248 KiB

art

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF = 1e18;

signed main() {
    cin.tie(0); ios::sync_with_stdio(false);
    ll N;
    cin >> N;
    vector<pair<ll,ll>> v(N);
    for(ll i = 0; i < N; i++) {
        cin >> v[i].first >> v[i].second;
    }
    sort(v.begin(), v.end());
    for(ll i = 0; i < N; i++) {
        if (i) v[i].second += v[i-1].second;
    }
    ll pref = v[0].first;
    ll res = -v[0].first + v[0].second + pref;
    for(ll i = 1; i < N; i++) {
        pref = max(pref, v[i].first - v[i-1].second);
        res = max(res, -v[i].first + v[i].second + pref);
    }
    cout << res;
}

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