public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  BigInteger n1 = sc . nextBigInteger ( ) ;
  BigInteger n2 = sc . nextBigInteger ( ) ;
  if ( n2 . subtract ( n1 ) . remainder ( new BigInteger ( "2" ) ) . intValue ( ) == 0 ) {
    System . out . println ( "NO" ) ;
    return ;
  }
  else {
    System . out . println ( "YES" ) ;
  }
  for ( BigInteger i = n1 ;
  i . compareTo ( n2 ) == - 1 ;
  i = i . add ( new BigInteger ( "1" ) ) ) {
    System . out . print ( i + " " ) ;
    i = i . add ( new BigInteger ( "1" ) ) ;
    System . out . print ( i + "\n" ) ;
  }
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; BigInteger n1 = sc . nextBigInteger ( ) ; BigInteger n2 = sc . nextBigInteger ( ) ; if ( n2 . subtract ( n1 ) . remainder ( new BigInteger ( "2" ) ) . intValue ( ) == 0 ) { System . out . println ( " NO " ) ; return ; } else { System . out . println ( " YES " ) ; } for ( BigInteger i = n1 ; i . compareTo ( n2 ) == - 1 ; i = i . add ( new BigInteger ( "1" ) ) ) { System . out . print ( i + " ▁ " ) ; i = i . add ( new BigInteger ( "1" ) ) ; System . out . print ( i + " \n " ) ; } }
(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: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) name: (identifier) arguments: (argument_list (object_creation_expression type: (type_identifier) arguments: (argument_list (string_literal))))) name: (identifier) arguments: (argument_list)) right: (decimal_integer_literal))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))) (return_statement)) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))))) (for_statement init: (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (identifier))) condition: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (unary_expression operand: (decimal_integer_literal))) update: (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (object_creation_expression type: (type_identifier) arguments: (argument_list (string_literal)))))) body: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (string_literal))))) (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (object_creation_expression type: (type_identifier) arguments: (argument_list (string_literal))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (string_literal)))))))))