Submission #920100

#	Time	Username	Problem	Language	Result	Execution time	Memory
920100		Sir_Ahmed_Imran	Global Warming (CEOI18_glo)	C++17	100 / 100	1171 ms	92360 KiB

glo

                              ///~~~LOTA~~~///
#include <bits/stdc++.h>
using namespace std;
#define nl '\n'
#define ff first
#define ss second
#define ll long long 
#define append push_back
#define all(x) (x).begin(),(x).end()
#define pii pair<int,int>
#define N 200001
#define M 1000000001
int a[N];
int Q[N];
struct Node{ 
    int val; 
    Node *L,*R; 
};
Node* getnode(){ 
    Node* temp=new Node; 
    temp->val=0; 
    temp->L=NULL; 
    temp->R=NULL; 
    return temp; 
}
class ST{
public:
    Node* root=getnode();
    void update(int& i,int& x,Node* v,int& s,int& e){
        if(e-s==1){
            v->val=x;
            return;
        }
        int mid=(s+e)/2;
        if(v->L==NULL) v->L=getnode();
        if(v->R==NULL) v->R=getnode();
        if(i<mid) update(i,x,v->L,s,mid);
        else update(i,x,v->R,mid,e);
        v->val=max(v->L->val,v->R->val);
        if(v->L->val==0){
            delete v->L;
            v->L=NULL;
        }
        if(v->R->val==0){
            delete v->R;
            v->R=NULL;
        }
    }
    int get(int& l,int& r,Node* v,int& s,int& e){
        if(r<=s || e<=l || l>=r || v->val==0) return 0;
        if(l<=s && e<=r) return v->val;
        int mid=(s+e)/2;
        if(v->L==NULL) v->L=getnode();
        if(v->R==NULL) v->R=getnode();
        int o=max(get(l,r,v->L,s,mid),get(l,r,v->R,mid,e));
        if(v->L->val==0){
            delete v->L;
            v->L=NULL;
        }
        if(v->R->val==0){
            delete v->R;
            v->R=NULL;
        }
        return o;
    }
};
inline void solve(){
    int n,m,o,p,q,r,s;
    cin>>n>>m;
    ST x,y;
    p=0;
    q=M;
    for(int i=o=1;i<=n;i++)
        cin>>a[i];
    for(int i=n;i>0;i--){
        r=a[i]+1;
        s=y.get(r,q,y.root,p,q)+1;
        Q[i]=y.get(a[i],r,y.root,p,q);
        y.update(a[i],s,y.root,p,q);
    }
    for(int i=1;i<=n;i++){
        r=x.get(p,a[i],x.root,p,q)+1;
        y.update(a[i],Q[i],y.root,p,q);
        x.update(a[i],r,x.root,p,q);
        s=max(a[i]-m+1,p);
        o=max(o,r+y.get(s,q,y.root,p,q));
    }
    cout<<o;
}
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    solve();
    return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 13 / 13
• Subtask 4: 10 / 10
• Subtask 5: 20 / 20
• Subtask 6: 17 / 17
• Subtask 7: 25 / 25