Submission #668784

#	Time	Username	Problem	Language	Result	Execution time	Memory
668784		Darren0724	Art Exhibition (JOI18_art)	C++17	100 / 100	185 ms	24700 KiB

art

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) x.begin(),x.end()
#define x first
#define y second
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;cin>>n;
    vector<pair<int,int>> v(n+1);
    for(int i=1;i<=n;i++){
        cin>>v[i].x>>v[i].y;
    }
    sort(v.begin()+1,v.end());
    vector<int> pre(n+1);
    for(int i=1;i<=n;i++){
        pre[i]=pre[i-1]+v[i].y;
    }
    int ans=0;
    int mx=-1e18;
    for(int i=1;i<=n;i++){
        mx=max(mx,v[i].x-pre[i-1]);
        ans=max(ans,pre[i]-v[i].x+mx);
    }
    cout<<ans<<endl;

    return 0;
}

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