Submission #526183

#	Time	Username	Problem	Language	Result	Execution time	Memory
526183		Hanksburger	Art Exhibition (JOI18_art)	C++17	100 / 100	181 ms	16396 KiB

art

#include <bits/stdc++.h>
using namespace std;
pair<long long, long long> a[500005];
vector<long long> v;
int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	long long n, sum, ans=0;
	cin >> n;
	for (long long i=1; i<=n; i++)
		cin >> a[i].first >> a[i].second;
	sort(a+1, a+n+1);
	for (long long i=1; i<=n; i++)
		v.push_back(a[i].second-a[i].first+a[i-1].first);
	sum=a[1].first;
	for (long long i=0; i<v.size(); i++)
	{
		sum=max(0LL, sum+v[i]);
		ans=max(ans, sum);
		sum=max(sum, a[i+2].first-a[i+1].first);
	}
	cout << ans;
	return 0;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:18:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |  for (long long i=0; i<v.size(); i++)
      |                      ~^~~~~~~~~

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