제출 #1181031

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1181031		irmuun	Financial Report (JOI21_financial)	C++20	0 / 100	4096 ms	7496 KiB

Main

#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    ll n,d;
    cin>>n>>d;
    ll a[n+5];
    vector<ll>ord(n);
    iota(all(ord),0);
    for(ll i=1;i<=n;i++){
        cin>>a[i];
    }
    sort(all(ord),[&](ll i,ll j){
        if(a[i]!=a[j]) return a[i]>a[j];
        return i<j;
    });
    vector<ll>dp(n+5,-1e9);
    vector<bool>act(n+5,false);
    for(ll j:ord){
        act[j]=true;
        dp[j]=1;
        ll last=j;
        for(ll i=j+1;i<=n;i++){
            if(act[i]){
                if(i-last<=d){
                    dp[j]=max(dp[j],dp[i]+1);
                }
            }
            else{
                if(i-last<=d){
                    last=i;
                }
            }
        }
    }
    ll ans=0;
    for(ll i=1;i<=n;i++){
        ans=max(ans,dp[i]);
    }
    cout<<ans;
}

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