public static void main ( String args [ ] ) {
  Scanner sc = new Scanner ( System . in ) ;
  int n = sc . nextInt ( ) ;
  int k = sc . nextInt ( ) ;
  int pairs = n / 2 ;
  if ( n == 1 ) {
    if ( k == 0 ) System . out . println ( 1 ) ;
    else System . out . println ( - 1 ) ;
    System . exit ( 0 ) ;
  }
  if ( k < pairs ) {
    System . out . println ( - 1 ) ;
    System . exit ( 0 ) ;
  }
  HashSet < Integer > hset = new HashSet < > ( ) ;
  int t = k - pairs + 1 ;
  System . out . print ( t + " " + ( 2 * t ) + " " ) ;
  hset . add ( t ) ;
  hset . add ( t * 2 ) ;
  int j = 1 ;
  if ( hset . contains ( j ) || hset . contains ( 1 + j ) ) j = j + 2 ;
  for ( int i = 1 ;
  i < pairs ;
  i ++ ) {
    while ( hset . contains ( j ) || hset . contains ( j + 1 ) ) j ++ ;
    System . out . print ( j + " " + ( 1 + j ) + " " ) ;
    hset . add ( j ) ;
    hset . add ( j + 1 ) ;
  }
  if ( pairs * 2 != n ) {
    while ( hset . contains ( j ) ) j ++ ;
    System . out . print ( j ) ;
  }
}

public static void main ( String args [ ] ) { Scanner sc = new Scanner ( System . in ) ; int n = sc . nextInt ( ) ; int k = sc . nextInt ( ) ; int pairs = n / 2 ; if ( n == 1 ) { if ( k == 0 ) System . out . println ( 1 ) ; else System . out . println ( - 1 ) ; System . exit ( 0 ) ; } if ( k < pairs ) { System . out . println ( - 1 ) ; System . exit ( 0 ) ; } HashSet < Integer > hset = new HashSet < > ( ) ; int t = k - pairs + 1 ; System . out . print ( t + " ▁ " + ( 2 * t ) + " ▁ " ) ; hset . add ( t ) ; hset . add ( t * 2 ) ; int j = 1 ; if ( hset . contains ( j ) || hset . contains ( 1 + j ) ) j = j + 2 ; for ( int i = 1 ; i < pairs ; i ++ ) { while ( hset . contains ( j ) || hset . contains ( j + 1 ) ) j ++ ; System . out . print ( j + " ▁ " + ( 1 + j ) + " ▁ " ) ; hset . add ( j ) ; hset . add ( j + 1 ) ; } if ( pairs * 2 != n ) { while ( hset . contains ( j ) ) j ++ ; System . out . print ( j ) ; } }
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(identifier)))))) consequence: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (while_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal)))))) body: (expression_statement (update_expression (identifier)))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) 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(expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))))