Submission #579330

#	Time	Username	Problem	Language	Result	Execution time	Memory
579330		MrDeboo	Art Exhibition (JOI18_art)	C++17	100 / 100	207 ms	20788 KiB

art

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define int long long
#define endl '\n'
using namespace std;
using namespace __gnu_pbds;
using ordered_set = tree<int,null_type,less_equal<int>,rb_tree_tag,tree_order_statistics_node_update>;
signed main(){
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int n;
	cin>>n;
	pair<int,int>pr[n];
	for(auto &i:pr)cin>>i.first>>i.second;
	sort(pr,pr+n);
	int ans=0,sm=0;
	for(int i=n-1;i>=0;i--){
		ans=max(ans,sm+pr[i].second);
		if(i)sm=max(0ll,sm+pr[i].second-pr[i].first+pr[i-1].first);
	}
	cout<<ans;
}

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