Submission #167689

#	Time	Username	Problem	Language	Result	Execution time	Memory
167689		theStaticMind	Art Exhibition (JOI18_art)	C++14	100 / 100	280 ms	24984 KiB

art

#include<bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define ii pair<int,int>
#define all(x) (x).begin(),(x).end()
#define INF 100000000000000000
#define modulo 1000000007
#define mod 998244353
#define int long long int
using namespace std;

int32_t main(){
      ios_base::sync_with_stdio(false);
      cin.tie(NULL);
   //   freopen("q.gir","r",stdin);
   //   freopen("q.cik","w",stdout);
      int n;
      cin>>n;
      vector<ii> arr(1,{-INF,-INF});
      for(int i=0;i<n;i++){
            int x,y;
            cin>>x>>y;
            arr.pb({x,y});
      }
      sort(all(arr));
      vector<int>pre(n+1,0);
      for(int i=1;i<=n;i++)pre[i]=pre[i-1]+arr[i].second;
      int ans=-INF,mx=-INF;
      for(int i=0;i<=n;i++){
            ans=max(ans,pre[i]-arr[i].first+mx);
            if(i+1<=n)
            mx=max(mx,arr[i+1].first-pre[i]);
      }
      cout<<ans;
}

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