public static void main ( String [ ] $ ) {
  Scanner sc = new Scanner ( in ) ;
  int n = sc . nextInt ( ) ;
  long x = sc . nextLong ( ) ;
  long [ ] a = new long [ 51 ] ;
  a [ 0 ] = 1 ;
  long [ ] p = new long [ 51 ] ;
  p [ 0 ] = 1 ;
  for ( int i = 0 ;
  i < 50 ;
  i ++ ) {
    a [ i + 1 ] = 2 * a [ i ] + 3 ;
    p [ i + 1 ] = 2 * p [ i ] + 1 ;
  }
  out . println ( f ( a , p , n , x ) ) ;
}

public static void main ( String [ ] $ ) { Scanner sc = new Scanner ( in ) ; int n = sc . nextInt ( ) ; long x = sc . nextLong ( ) ; long [ ] a = new long [ 51 ] ; a [ 0 ] = 1 ; long [ ] p = new long [ 51 ] ; p [ 0 ] = 1 ; for ( int i = 0 ; i < 50 ; i ++ ) { a [ i + 1 ] = 2 * a [ i ] + 3 ; p [ i + 1 ] = 2 * p [ i ] + 1 ; } out . println ( f ( a , p , n , x ) ) ; }
(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 (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)))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (decimal_integer_literal))))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (decimal_integer_literal))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (decimal_integer_literal))))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) 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: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (binary_expression left: (binary_expression left: (decimal_integer_literal) right: (array_access array: (identifier) index: (identifier))) right: (decimal_integer_literal)))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (binary_expression left: (binary_expression left: (decimal_integer_literal) right: (array_access array: (identifier) index: (identifier))) right: (decimal_integer_literal)))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier) (identifier) (identifier))))))))