permutation_using_buitin_fn.cpp

#include<bits/stdc++.h>
using namespace std;

vector<vector<int>> ans;
int32_t main() {
    int n;
    cin>>n;
    vector<int> a(n);
    for(auto &i : a){
        cin>>i;
    }cout<<"\n";
    
    sort(a.begin(),a.end());
    do{
        ans.push_back(a);
    }while(next_permutation(a.begin(),a.end()));
    
    for(auto v : ans){
        for(auto i:v){
            cout<<i<<" ";
        }
        cout<<"\n";
    }
}