Submission #1257992

#	Time	Username	Problem	Language	Result	Execution time	Memory
1257992		meisean2009	Art Exhibition (JOI18_art)	C++20	0 / 100	0 ms	320 KiB

art

#include <bits/stdc++.h>
#define int long long 
using namespace std;
typedef pair<int,int> p;
#define f first 
#define s second 
int n,ans=0,cur=0;
vector<p> artworks;
int bestprf = LLONG_MAX/2;//best prefix: A dp optimisation
signed main(){
    cin>>n;
    for (int i=0;i<n;i++){
        int a,b;cin>>a>>b;
        artworks.push_back(make_pair(a,b));
    }
    sort(artworks.begin(),artworks.end());
    //-current size + val
    //prefix: prefix + current size
    for (auto [sze,val]:artworks){
        cur += val;
        ans = max(ans,cur-sze-bestprf);
        bestprf = min(bestprf,cur-val-sze);
    }
    cout<<ans;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 50