Submission #782529

#	Time	Username	Problem	Language	Result	Execution time	Memory
782529		acatmeowmeow	Art Exhibition (JOI18_art)	C++11	100 / 100	161 ms	24772 KiB

art

#include <bits/stdc++.h>

using namespace std;

#define int long long 

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int n;
	cin >> n;
	vector<pair<int, int>> arr(n + 5);
	for (int i = 1; i <= n; i++) cin >> arr[i].first >> arr[i].second;
	sort(arr.begin() + 1, arr.begin() + n + 1);
	vector<int> prefix(n +5 );
	for (int i = 1; i <= n; i++) prefix[i] = arr[i].second + prefix[i - 1];
	int mx = -1e18;
	int ans = -1e18;
	for (int i = 1; i <= n; i++) {
		mx = max(mx, -prefix[i - 1] + arr[i].first);
		ans = max(ans, prefix[i] - arr[i].first + mx);
	}
	cout << ans << '\n';
	return 0;
}

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