Submission #703366

#	Time	Username	Problem	Language	Result	Execution time	Memory
703366		1075508020060209tc	Art Exhibition (JOI18_art)	C++14	100 / 100	476 ms	24796 KiB

art

//#pragma GCC optimize("O3")
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define X first
#define Y second
int n;
pair<int,int>ar[1000006];int ps[1000006];
signed main(){

cin>>n;
for(int i=1;i<=n;i++){
    cin>>ar[i].first>>ar[i].second;
}
sort(ar+1,ar+n+1);
for(int i=1;i<=n;i++){
    ps[i]=ar[i].second+ps[i-1];
}
int ans=-1e17;
int mnad=0+ar[1].first;
for(int i=1;i<=n;i++){
    ans=max(ans,mnad+ps[i]-ar[i].first);
    mnad=max(mnad,-ps[i]+ar[i+1].first);
}
cout<<ans<<endl;
}

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