class Solution

 {

 public:

     void Print1ToMaxOfNDigits(int n)

     {

         if (n < )

         {

             cout <<  << endl;

             return;

         }

         string str = "";

         while(str.length()<n+)

         {

             cout << str << endl;

             int c = ;

             for (int i = str.length() - ; i >= ; --i)

             {

                 if (i == str.length() -  || c == )

                 {

                     int temp = str[i] - '' + ;

                     str[i] = temp %  + '';

                     c = temp / ;

                 }

                 else

                     break;

             }

             if (c == )

                 str.insert(str.begin(), '');

         }

     }

 };