Print the required sequences
if ( ! flag ) { for ( auto i = inc_arr . begin ( ) ; i != inc_arr . end ( ) ; i ++ ) cout << * i << " ▁ " ; cout << endl ; for ( auto i = dec_arr . begin ( ) ; i != dec_arr . end ( ) ; i ++ ) cout << * i << " ▁ " ; cout << endl ; } }