Submission #1250801

#	Time	Username	Problem	Language	Result	Execution time	Memory
1250801		dssfsuper2	Art Exhibition (JOI18_art)	C++20	100 / 100	136 ms	21456 KiB

art

#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
    ios_base::sync_with_stdio(false);cin.tie(0);
    int n;cin>>n;
    vector<pair<int, int>> svs;

    vector<int> prs={0};
    vector<int> agprs={0};
    for(int i = 0;i<n;i++){
        int x, y;cin>>x>>y;
        svs.push_back({x, y});
    }
    sort(svs.begin(), svs.end());
    for(int i = 0;i<n;i++){
        prs.push_back(prs.back()+svs[i].second);
        agprs.push_back(prs.back()-svs[i].first);
    }
    vector<int> rvmprs(n+1);
    int mx=-1e18;
    for(int i=n;i>=0;i--){
        mx=max(mx, agprs[i]);
        rvmprs[i]=mx;
    }   
    int res = -1e18;
    for(int i = 0;i<n;i++){
        res=max(res, rvmprs[i+1]-prs[i]+svs[i].first);
    }
    cout << res << '\n';
}

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