Submission #1264031

#	Time	Username	Problem	Language	Result	Execution time	Memory
1264031		piolk	Art Exhibition (JOI18_art)	C++20	0 / 100	0 ms	320 KiB

art

#include <bits/stdc++.h>
using namespace std;

using ll=long long;

ll compute(ll sum,ll min,ll max){
    return sum-(max-min);
}

int main(){
    int n;
    cin>>n;

    vector<pair<ll,ll>> paintings(n);

    for (int i=0;i<n;i++){
        ll a,b;
        cin>>a>>b;
        paintings[i]={a,b};
    }

    sort(paintings.begin(),paintings.end());

    int l=0;
    int r=-1;

    ll sum=0;
    ll min=paintings[l].first;
    ll maxx=0;
    ll ans=0;

    while (r<n-1){
        r++;
        sum+=paintings[r].second;
        maxx=paintings[r].first;

        //cout<<"now at: "<<r<<" sum is: "<<sum<<" and max is now "<<maxx<<" and min is "<<min<<"\n"; 

        ans=max(ans,compute(sum,min,maxx));

        while (l<r && compute(sum-paintings[l].second,paintings[l+1].first,maxx)>ans){
            //cout<<"it's better if we exclude "<<l<<" because we will have "<<compute(sum-paintings[l].second,paintings[l+1].first,maxx)<<"\n";
            sum-=paintings[l].second;
            l++;
            min=paintings[l].first;
        }

        ans=max(ans,compute(sum,min,maxx));
    }

    cout<<ans;
    return 0;
}

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