public static void main ( String [ ] args ) {
  Scanner scn = new Scanner ( System . in ) ;
  long a = scn . nextLong ( ) ;
  long b = scn . nextLong ( ) ;
  System . out . println ( "YES" ) ;
  for ( long i = a ;
  i <= b ;
  i += 2 ) {
    System . out . println ( i + " " + ( i + 1 ) ) ;
  }
}

public static void main ( String [ ] args ) { Scanner scn = new Scanner ( System . in ) ; long a = scn . nextLong ( ) ; long b = scn . nextLong ( ) ; System . out . println ( " YES " ) ; for ( long i = a ; i <= b ; i += 2 ) { System . out . println ( i + " ▁ " + ( i + 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: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (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: (integral_type) declarator: (variable_declarator name: (identifier) value: (identifier))) condition: (binary_expression left: (identifier) right: (identifier)) update: (assignment_expression left: (identifier) right: (decimal_integer_literal)) body: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (identifier) right: (string_literal)) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))))))))))