Submission #916492

#	Time	Username	Problem	Language	Result	Execution time	Memory
916492		WJR_dagger	Stone Arranging 2 (JOI23_ho_t1)	C++17	25 / 100	2093 ms	1116 KiB

Main

#include<bits/stdc++.h>
#include <bits/extc++.h>
using namespace std;
using namespace __gnu_pbds;
//#define int long long
#define endl "\n"
#define pb push_back
#define f first
#define s second
#define all(x) x.begin(), x.end()
#define cout_line cout<<"line"<<__LINE__<<endl
#define cout_val(x) cout<<#x<<": "<<x<<endl
const long long mod=1e9+7;

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

    int n;cin>>n;
    int arr[n]={};
    for(int i=0;i<n;i++)
    {
        cin>>arr[i];
    }
    int l=0,r=0;
    set<int> cnt;
    while(r<n)
    {
        int val;
        
        while(r<n){
            if(cnt.count(arr[r])==0)
            {
                cnt.insert(arr[r]);
                r++;
            } 
            else{
                val=arr[r];
                break;
            }
        }
        if(r==n) goto end;

        int idx=r;
        
        for(l=r-1;l>=0;l--)
        {
            if(arr[l]==val){
                while(arr[l-1]==val){
                    l--;
                }
                idx=l;
                break;
            }
        }
        for(int i=idx;i<r;i++)
        {
            cnt.erase(arr[i]);
            arr[i]=val;
        }
        cnt.insert(val);
        r++;
    }
    end:;
    for(int i:arr){
        cout<<i<<" ";
    }
    

    return 0;
}

• Subtask 1: 25 / 25
• Subtask 2: 0 / 35
• Subtask 3: 0 / 40