public static void main ( String [ ] args ) {
  Scanner in = new Scanner ( System . in ) ;
  int a = in . nextInt ( ) * 10 , b = in . nextInt ( ) , n = in . nextInt ( ) , i , j ;
  in . close ( ) ;
  for ( i = 9 ;
  i >= 0 ;
  i -- ) {
    if ( ( a + i ) % b == 0 ) {
      System . out . print ( a + i ) ;
      for ( j = 0 ;
      j < n - 1 ;
      j ++ ) System . out . print ( 0 ) ;
      return ;
    }
  }
  System . out . println ( - 1 ) ;
}

public static void main ( String [ ] args ) { Scanner in = new Scanner ( System . in ) ; int a = in . nextInt ( ) * 10 , b = in . nextInt ( ) , n = in . nextInt ( ) , i , j ; in . close ( ) ; for ( i = 9 ; i >= 0 ; i -- ) { if ( ( a + i ) % b == 0 ) { System . out . print ( a + i ) ; for ( j = 0 ; j < n - 1 ; j ++ ) System . out . print ( 0 ) ; return ; } } System . out . println ( - 1 ) ; }
(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: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (decimal_integer_literal))) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) declarator: (variable_declarator name: (identifier)) declarator: (variable_declarator name: (identifier))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) (for_statement init: (assignment_expression left: (identifier) right: (decimal_integer_literal)) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) right: (identifier)) right: (decimal_integer_literal))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (identifier))))) (for_statement init: (assignment_expression left: (identifier) right: (decimal_integer_literal)) condition: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (decimal_integer_literal))))) (return_statement))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (unary_expression operand: (decimal_integer_literal)))))))