Submission #41071

#	Time	Username	Problem	Language	Result	Execution time	Memory
41071		kdh9949	Art Exhibition (JOI18_art)	C++14	100 / 100	234 ms	16396 KiB

art

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

using ll = long long;
using pll = pair<ll, ll>;
#define X first
#define Y second

const int N = 500005;

int n;
pll a[N];
ll v[N], d[N], r;

int main(){
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	cin >> n;
	for(int i = 1; i <= n; i++) cin >> a[i].X >> a[i].Y;
	sort(a + 1, a + n + 1);
	for(int i = 1; i <= n; i++) v[i] = a[i].Y - (a[i].X - a[i - 1].X);
	d[n] = v[n];
	r = a[n].Y;
	for(int i = n - 1; i >= 1; i--){
		d[i] = max(d[i + 1] + v[i], v[i]);
		r = max(r, d[i] + a[i].X - a[i - 1].X);
	}
	cout << r;
}

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