Submission #258440

#	Time	Username	Problem	Language	Result	Execution time	Memory
258440		SpeedOfMagic	Art Exhibition (JOI18_art)	C++17	100 / 100	231 ms	13176 KiB

art

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

#define int long long
signed main() {
  ios::sync_with_stdio(0); cin.tie();
	int n; cin >> n;
	pair<int, int> p[n];
	for (int i = 0; i < n; ++i) {
		cin >> p[i].first >> p[i].second;
	}
	sort(p, p + n);
	vector<int> d(n);
	int s = 0;
	for (int i = 0; i < n; ++i) {
		s += p[i].second;
		d[i] = s - p[i].first;
	}
	for (int i = n - 2; i >= 0; --i)
		d[i] = max(d[i], d[i + 1]);
	int ans = 0;
	int pen = 0;
	for (int i = 0; i < n; ++i) {
		ans = max(ans, d[i] + p[i].first + pen);
		pen -= p[i].second;
	}
	cout << ans << endl;
	
	return 0;
}

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