Submission #747451

#	Time	Username	Problem	Language	Result	Execution time	Memory
747451		erering	Art Exhibition (JOI18_art)	C++17	100 / 100	175 ms	16060 KiB

art

#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define mod 1000000007
#define ll long long
#define inf 1000000009
int main()
{
  ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
  ll a; cin>>a;
  pair<ll,ll> p[a+1];
  p[0].first=-1;
  p[0].second=-1;
  for(int i=1;i<=a;i++){
    cin>>p[i].first; cin>>p[i].second;
  }
  sort(p,p+a+1);
  ll pref[a+1],prefmn[a+1];
  pref[0]=0;
  prefmn[0]=1e9;
  for(int i=1;i<=a;i++){
    pref[i]=p[i].second+pref[i-1];
    prefmn[i]=min(prefmn[i-1],p[i].first*-1+pref[i-1]);
  }
  ll mx=0;
  for(int i=1;i<=a;i++){
    mx=max(mx,pref[i]-p[i].first-prefmn[i]);
  }
  cout<<mx;
}

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