Submission #534908

#	Time	Username	Problem	Language	Result	Execution time	Memory
534908		amunduzbaev	Art Exhibition (JOI18_art)	C++17	100 / 100	210 ms	24756 KiB

art

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

#define ar array
#define int long long
const int N = 5e5 + 5;
ar<int, 2> a[N];
int pref[N];

signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	int n; cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i][0]>>a[i][1];
	}
	
	//~ sort(a+1, a+n+1, [&](ar<int, 2>& a, ar<int, 2>& b){
		//~ return (a[0] < b[0]);
	//~ });
	sort(a + 1, a + n + 1);
	for(int i=1;i<=n;i++) pref[i] = pref[i-1] + a[i][1];
	
	int mx = -1e18, res = -1e18;
	for(int i=1;i<=n;i++){
		mx = max(mx, a[i][0] - pref[i-1]);
		res = max(res, pref[i] - a[i][0] + mx);
	}
	
	cout<<res<<"\n";
}

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