public static void main ( String [ ] arg ) {
  Scanner in = new Scanner ( System . in ) ;
  long x = in . nextLong ( ) ;
  long at = 0 , aux = x , u = 1 , cnt = 1 ;
  while ( aux >= 10 ) {
    at += x - u ;
    aux /= 10 ;
    u *= 10 ;
    cnt ++ ;
  }
  at += ( x - u + cnt ) ;
  System . out . printf ( "%d\n" , at ) ;
}

public static void main ( String [ ] arg ) { Scanner in = new Scanner ( System . in ) ; long x = in . nextLong ( ) ; long at = 0 , aux = x , u = 1 , cnt = 1 ; while ( aux >= 10 ) { at += x - u ; aux /= 10 ; u *= 10 ; cnt ++ ; } at += ( x - u + cnt ) ; System . out . printf ( " % d \n " , at ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal)) declarator: (variable_declarator name: (identifier) value: (identifier)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) body: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier)))) (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))) (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))) (expression_statement (update_expression (identifier))))) (expression_statement (assignment_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal) (identifier))))))