Submission #241042

#	Time	Username	Problem	Language	Result	Execution time	Memory
241042		Cantfindme	Art Exhibition (JOI18_art)	C++17	100 / 100	233 ms	13336 KiB

art

#include <bits/stdc++.h>
using namespace std;
#define int long long
typedef pair<int,int> pi;
#define f first
#define s second
#define FAST ios_base::sync_with_stdio(0); cin.tie(0);
const int maxn = 500010;
const int INF = LLONG_MAX/4;

int n;
vector <pi> v;
int pp[maxn];

int32_t main() {
	FAST
	cin >> n;
	for (int i =0;i<n;i++) {
		int a,b; cin >> a >> b;
		v.push_back(pi(a,b)); //size, value
	}
	
	sort(v.begin(),v.end());
	
	int best = v[0].f;
	int ans = 0;
	
	for (int i =0;i<(int)v.size();i++) {
		pp[i] = (i == 0 ? 0 : pp[i-1]);
		pp[i] += v[i].s;
		
		if (i != 0) best = max(best, v[i].f - pp[i-1]);
		ans = max(ans, pp[i] - v[i].f + best);

	}
	
	cout << ans;
	
}

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