Submission #507545

#	Time	Username	Problem	Language	Result	Execution time	Memory
507545		maco1503	Art Exhibition (JOI18_art)	C++14	100 / 100	198 ms	28692 KiB

art

#include <bits/stdc++.h>
#define rpd ios_base :: sync_with_stdio(0); cin.tie(0);
#define ll long long
#define fs first
#define sc second
#define pb push_back
#define mod 666013
#define NMAX 100000 + 5
#define inf LLONG_MAX

using namespace std;

pair < ll ,ll > v[500005];
ll s;
ll st[500005];
ll dr[500005];

int main()
{
    rpd;
     int n;
    cin>>n;
    for(int i=1;i<=n;++i)
    {
        ll  mar,val;
        cin>>mar >> val;
        v[i]={mar,val};
        s+=v[i].second;
    }

    sort(v+1,v+1+n);

    ll ans= s -v[n].first+v[1].first;

    long long sp=0;
    for(long long i=2;i<=n;++i)
    {
        sp+=v[i-1].sc;
        st[i]=v[i].fs-sp-v[1].fs;
        st[i]=max(st[i-1],st[i]);
    }

     sp=0;
    for(long long i=n-1;i>=1;--i)
    {
        sp+=v[i+1].sc;
        dr[i]=v[n].fs-sp-v[i].fs;
        dr[i]=max(dr[i],dr[i+1]);
    }
    ll ans2=0;
    for(int i=1;i<=n;i++)ans2=max(ans2,st[i]+dr[i]);
    cout<<ans+ans2;
    return 0;
}

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