Submission #1180566

#	Time	Username	Problem	Language	Result	Execution time	Memory
1180566		asli_bg	Art Exhibition (JOI18_art)	C++20	100 / 100	219 ms	43500 KiB

art

#include<bits/stdc++.h>
using namespace std;

#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;

#define int long long
//#define int double

typedef pair<int,int> pii;
typedef vector<pii> vii;
typedef vector<int> vi;
typedef vector<bool> vb;

#define FOR(i,a) for(int i=0;i<(a);i++)
#define FORE(i,a,b) for(int i=(a);i<(b);i++)

#define all(x) x.begin(),x.end()
#define fi first
#define se second
#define pb push_back
#define sp <<" "<<

#define cont(x) for(auto el:x) cout<<el<<' ';cout<<endl;
#define contp(x) for(auto el:x) cout<<el.fi<<'-'<<el.se<<' ';cout<<endl;

#define DEBUG(x) cout<<#x sp x<<endl;
#define carp(x,y) ((x%MOD)*(y%MOD))%MOD
#define topla(x,y) ((x%MOD)+(y%MOD))%MOD
#define mid (l+r)/2

const int MAXN=1e5+5;
const int MOD=1e9+7;
const int INF=1e18;

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n;
    cin>>n;
    vii a(n);
    FOR(i,n) cin>>a[i].fi>>a[i].se;

    sort(all(a));

    vi bir(n,0);
    vi iki(n,0);
    vi deg(n,0);

    set<int> cur;

    int ans=0;

    bir[0]=a[0].se;
    iki[0]=0;
    cur.insert(a[0].fi);
    FORE(i,1,n){
        bir[i]=bir[i-1]+a[i].se;
        cur.insert(a[i].fi);
        iki[i]=*cur.rbegin()-*cur.begin();
        deg[i]=bir[i]-iki[i];
        ans=max(ans,bir[i]-iki[i]);
    }

    for(int i=n-2;i>=0;i--) deg[i]=max(deg[i+1],deg[i]);

    int tt=0;
    FORE(i,1,n){
        tt-=a[i-1].se;
        tt+=a[i].fi-a[i-1].fi;
        ans=max(ans,deg[i]+tt);
    }

    cout<<ans<<endl;
}   

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