Submission #700114

#	Time	Username	Problem	Language	Result	Execution time	Memory
700114		dsyz	Art Exhibition (JOI18_art)	C++17	100 / 100	198 ms	24616 KiB

art

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define MAXN (1000005)
int main() {
	ios_base::sync_with_stdio(false);cin.tie(0);
	ll N;
	cin>>N;
	pair<ll,ll> arr[N];
	ll maximum = 0;
	for(ll i = 0;i < N;i++){
		cin>>arr[i].first>>arr[i].second;
	}
	sort(arr,arr + N);
	ll psumB[N + 1]; //1-indexed
	psumB[0] = 0;
	for(ll i = 1;i <= N;i++){
		psumB[i] = psumB[i - 1] + arr[i - 1].second;
	}
	ll maxL = -1e18;
	for(ll i = 0;i < N;i++){
		maxL = max(maxL,arr[i].first - psumB[i]);
		maximum = max(maximum,maxL + psumB[i + 1] - arr[i].first);
	}
	cout<<maximum<<'\n';
}

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