Submission #547430

#	Time	Username	Problem	Language	Result	Execution time	Memory
547430		tmn2005	Art Exhibition (JOI18_art)	C++17	100 / 100	250 ms	24720 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>

int n, m, k, a, b, c, d, pref[500012];
array<int, 2>arr[500012];

void solve(){
	cin>>n;
	for(int i=1; i<=n; i++){
		cin>>arr[i][0]>>arr[i][1];
	}sort(arr+1, arr+1+n);
	
	for(int i=1; i<=n; i++)pref[i] = pref[i-1] + arr[i][1];
	
	int res = 0, mx = 0;
	for(int i=1; i<=n; i++){
		mx = max(mx, (arr[i][0] - pref[i-1]));
		res = max(res, pref[i] - arr[i][0] + mx);
	}
	cout<<res<<"\n";
}
main(){
	NeedForSpeed;
	int T = 1;
//	cin >> T;
	while(T--){
		solve();
	}
	return 0;
}

Compilation message (stderr)

art.cpp:46:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   46 | main(){
      | ^~~~

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