CPP my template

#include<bits/stdc++.h>

#include <ext/pb_ds/assoc_container.hpp>

#include <ext/pb_ds/tree_policy.hpp>

using namespace std;

using namespace __gnu_pbds;

#define ll long long int

#define endl "\n"

#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>

int main()

{

   ios_base::sync_with_stdio(0);

   cin.tie(0);

   cout.tie(0);

  

  

    return 0;

}