Submission #234902

#	Time	Username	Problem	Language	Result	Execution time	Memory
234902		amoo_safar	Art Exhibition (JOI18_art)	C++14	100 / 100	230 ms	8720 KiB

art

#include <bits/stdc++.h>

#define pb push_back
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define debug(x) cerr << #x << " : " << x << '\n'

using namespace std;

typedef long long ll;
typedef long double ld;
typedef string str;
typedef pair<ll, ll> pll;

const ll Mod = 1000000007LL;
const int N = 2e5 + 10;
const ll Inf = 2242545357980376863LL;
const ll Log = 30;

vector<pll> V;

int main(){
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	int n;
	cin >> n;
	ll a, b;
	for(int i = 0; i < n; i++){
		cin >> a >> b;
		V.pb({a, b});
	}
	ll ans = 0;
	sort(all(V));
	ll mx = -Inf;
	ll s = 0;
	for(int i = 0; i < n; i++){
		mx = max(mx, V[i].F - s);
		s += V[i].S;
		ans = max(ans, s - V[i].F + mx);
	}
	cout << ans << '\n';
	return 0;
}

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