Submission #372347

#	Time	Username	Problem	Language	Result	Execution time	Memory
372347		mariowong	Art Exhibition (JOI18_art)	C++14	100 / 100	246 ms	32748 KiB

art

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

long long n,l;
long long ans,b[500005],mx[500005],ps[500005];
pair<long long,long long> a[500005];
int main(){
	ios::sync_with_stdio(false);
	cin >> n;
	for (int i=1;i<=n;i++){
		cin >> a[i].first >> a[i].second;
	}
	sort(a+1,a+1+n);
	for (int i=1;i<=n;i++){
		ps[i]=ps[i-1]+a[i].second;
		b[i]=ps[i]-a[i].first;
	}
	mx[n+1]=-1e18;
	for (int i=n;i>=1;i--){
		mx[i]=max(mx[i+1],b[i]);
	}
	ans=-1e18;
	for (int i=1;i<=n;i++){
		ans=max(ans,mx[i]+a[i].first-ps[i-1]);
	}
	cout << ans << "\n";
	return 0;
}	

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