Submission #715892

#	Time	Username	Problem	Language	Result	Execution time	Memory
715892		Juan	Art Exhibition (JOI18_art)	C++14	100 / 100	709 ms	8824 KiB

art

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int, int>
#define ff first
#define ss second
const int maxn = 5e5 + 5, INF = 0x3f3f3f3f3f3f3f3f;

pii v[maxn];

int32_t main(){
	int n; cin >> n;
	for(int i = 0; i < n; i++) cin >> v[i].ff >> v[i].ss;
	sort(v, v+n);

	int sum = 0, mx = -INF, ans = v[0].ss;
	for(int i = 0; i < n; i++){
		sum += v[i].ss;
		if(i) ans = max({ans, -v[i].ff +sum +mx, v[i].ss});

		mx = max(mx, -(sum-v[i].ss) +v[i].ff);
	}

	cout << ans << '\n';
}

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