Submission #547322

#	Time	Username	Problem	Language	Result	Execution time	Memory
547322		tmn2005	Art Exhibition (JOI18_art)	C++17	0 / 100	0 ms	212 KiB

art

#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#include<bits/stdc++.h>

using namespace __gnu_pbds;
using namespace std;
typedef long long ll;

#define fr first
#define sc second

#define mk make_pair
#define pb push_back
#define pob pop_back
#define pf push_front
#define pof pop_front

#define int long long
#define pii pair<int,int>
#define piii pair<int,pii>

#define all(s) s.begin(), s.end()
#define allr(s) s.rbegin(), s.rend()

#define NeedForSpeed ios::sync_with_stdio(0), cin.tie(0)
#define ordered_set tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update>
const int N = 5e5 + 12;
int n, m, k, a, b, c, d, pref[N];
vector<pii>v;

void solve(){
	cin>>n;
	v.pb({0, 0});
	for(int i=0; i<n; i++){
		int x, y;
		cin>>x>>y;
		v.pb({x, y});
	}sort(all(v));
	
	for(int i=1; i<=n; i++){
		pref[i] = pref[i-1] + v[i].sc;
	}
	int l = 0, res = 0, ans = 0;
	for(int r=1; r<=n; r++){
		ans = max(ans, pref[r] - pref[l-1] - v[r].fr + v[l].fr);
		while(l <= r && ans < pref[r] - pref[l] - v[r].fr + v[l+1].fr){
			l++;
			ans = max(ans, pref[r] - pref[l-1] - v[r].fr + v[l].fr);
		}
		//cout<<l<<" "<<r<<endl;
		res = max(res, ans);
	}
	cout<<res<<"\n";
}
main(){
	NeedForSpeed;
	int T = 1;
//	cin >> T;
	while(T--){
		solve();
	}
	return 0;
}

Compilation message (stderr)

art.cpp:55:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   55 | main(){
      | ^~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 50