text: If the current node is neither covered nor needs to be selected compulsorily
code: ans = 1 + minDominatingSet ( root . left , 1 , 0 ) + minDominatingSet ( root . right , 1 , 0 ) ; NEW_LINE if ( root . left ) : NEW_LINE INDENT ans = min ( ans , minDominatingSet ( root . left , 0 , 1 ) + minDominatingSet ( root . right , 0 , 0 ) ) ; NEW_LINE DEDENT if ( root . right ) : NEW_LINE INDENT ans = min ( ans , minDominatingSet ( root . left , 0 , 0 ) + minDominatingSet ( root . right , 0 , 1 ) ) ; NEW_LINE DEDENT