Submission #1192342

#	Time	Username	Problem	Language	Result	Execution time	Memory
1192342		Aiperiii	Financial Report (JOI21_financial)	C++20	12 / 100	4094 ms	62224 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) x.begin(),x.end()
#define ff first
#define ss second
#define pb push_back
const int N=3e5+5;
int t[N*4];
void update(int v,int tl,int tr,int pos,int x){
    if(tl==tr){
        t[v]+=x;
        return;
    }
    int tm=(tl+tr)/2;
    if(pos<=tm)update(v*2,tl,tm,pos,x);
    else update(v*2+1,tm+1,tr,pos,x);
    t[v]=t[v*2]+t[v*2+1];
}
int get(int v,int tl,int tr,int l,int r){
    if(r<tl or tr<l)return 0;
    if(l<=tl && tr<=r)return t[v];
    int tm=(tl+tr)/2;
    return get(v*2,tl,tm,l,r)+get(v*2+1,tm+1,tr,l,r);
}
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    int n,d;
    cin>>n>>d;
    vector <int> a(n);
    for(int i=0;i<n;i++){
        cin>>a[i];
    }
    if(d==1){
        int ans=0;
        int mx=0;
        set <int> st;
        for(int i=0;i<n;i++){
            st.insert(a[i]);
        }
        map <int,int> pos;
        int id=1;
        for(auto x : st){
            pos[x]=id;
            id++;
        }
        map <int,int> mp;
        for(int i=n-1;i>=0;i--){
            ans-=get(1,1,n,1,pos[a[i]]);
            vector <int> del;
            for(auto x : mp){
                if(x.ff>a[i])break;
                update(1,1,n,pos[x.ff],-x.ss);
                del.pb(x.ff);
            }
            for(auto x : del)mp.erase(x);
            
            //cout<<get(1,1,n,1,pos[a[i]])<<" ";
            ans++;
            mx=max(mx,ans);
            update(1,1,n,pos[a[i]],1);
            mp[a[i]]++;
        }
        
        cout<<mx<<"\n";
        return 0;
    }
    
    
    vector <int> dp(n);
    
    for(int i=0;i<n;i++){
        bool ok=1;
        int cnt=0,pr=i;
        dp[i]=1;
        for(int j=i-1;j>=0;j--){
            if(a[j]<a[i]){
                cnt++;
                
                if(pr-j>d)ok=0;
                
                pr=j;
            }
            if(ok && a[j]<a[i]){
                dp[i]=max(dp[i],dp[j]+1);
                break;
            }
            
        }
        
    }
    int mx=0;
    for(int i=0;i<n;i++){
        mx=max(mx,dp[i]);
    }
    cout<<mx<<"\n";
}
/*
3 5 12345678
000
0??
1?0
?11
???
 
 4 8 3141592653589793
 0101
 ?01?
 ??1?
 ?0??
 1?00
 01?1
 ??10
 ????
*/

• Subtask 1: 0 / 14
• Subtask 2: 0 / 14
• Subtask 3: 0 / 20
• Subtask 4: 12 / 12
• Subtask 5: 0 / 5
• Subtask 6: 0 / 35