Submission #1108479

#	Time	Username	Problem	Language	Result	Execution time	Memory
1108479		vjudge1	Art Exhibition (JOI18_art)	C++17	100 / 100	150 ms	12640 KiB

art

#include <bits/stdc++.h>
#define N 500002
#define pii pair<int,int>
#define fi first
#define se second
#define int long long
using namespace std;
int n,x,y,ans=-1e17,t[N];
vector<pii>a;
signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>x>>y;
        a.push_back({x,y});
    }
    sort(a.begin(),a.end());
    t[1]=a[0].se-a[0].fi;
    for(int i=1;i<=n;i++)
    {
        if(i!=1)t[i]=t[i-1]+a[i-1].se-a[i-1].fi+a[i-2].fi;
        //cout<<t[i]<<endl;
    }
    int mn=1e17;
    for(int i=1;i<=n;i++)
    {
        ans=max(ans,a[i-1].se);
        ans=max(ans,t[i]-mn);
        mn=min(mn,t[i]-a[i-1].se);
    }
    cout<<ans;
    return 0;
}

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