Submission #202339

#	Time	Username	Problem	Language	Result	Execution time	Memory
202339		someone_aa	Art Exhibition (JOI18_art)	C++17	100 / 100	842 ms	21864 KiB

art

#include <bits/stdc++.h>
#define ll long long 
#define pb push_back
#define mp make_pair
using namespace std;
const int maxn = 500100;
vector<pair<ll,ll> > v;
ll pref[maxn], n;

int main() {
	cin>>n;
	ll a, b;
	for(int i=1;i<=n;i++) {
		cin>>a>>b;
		v.pb({a, b});
	} sort(v.begin(), v.end());

	ll result = 0LL;
	ll maxv = 0LL;
	for(int i=1;i<=n;i++) {
		maxv = max(maxv, v[i-1].first - pref[i-1]);
		pref[i] = pref[i-1] + v[i-1].second;
		
		result = max(result, pref[i] - v[i-1].first + maxv);
	}
	cout<<result<<"\n";
}

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