nVrUN7 - Online C++ Compiler & Debugging Tool

#include <bits/stdc++.h>
using namespace std;
//#define int long long
#define dd double
#define ld long double
#define ull unsigned long long
#define yes cout << "YES\n"
#define no cout << "NO\n"
#define el "\n"
#define Arwa ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define fix(x) cout << fixed << setprecision(x)
#define all(v) v.begin(),v.end()
#define mod 1000000007
//Here We Go Again
void Done()
{
     int n;
     cin>>n;
     int arr[n];
     for(int i=0;i<n;i++)
     cin>>arr[i];
     int l=0,r=0,mxlength=n,l2=0,r2=0,mxor=0;
     int orr=arr[l];
     while(r+1<n)
     {
      r++;
        //cout<<r<<el;
        if((orr|arr[r])>=orr)
        {
        orr|=arr[r]; //cout<<orr<<el;
        if((orr|arr[l])==arr[r])
          l++;
        }
        else
        {
        orr=arr[r];
        l=r;
        }
        mxor=max(mxor,orr);
     }
    // cout<<mxor<<el;
    orr=arr[l2];
     while(r2+1<n)
     {
      r2++;
        //cout<<r<<el;
        if((orr|arr[r2])>=orr)
        {
        orr|=arr[r2]; //cout<<orr<<el;
        if((orr|arr[l2])==arr[r2])
          l2++;
        }
        else
        {
        orr=arr[r2];
        l2=r2;
        }
        if(orr==mxor)
        mxlength=min(mxlength,r2-l2+1);
     }
     cout<<mxlength;
}
//اى ويل بريبير ماى بيبرز تو بى ذا بيست ان زيس وورلد
int32_t main()
{
    Arwa
    int t=1;
    //cin>>t;
    while(t--)
    {
        Done();
    }
    return 0;
}