public static void main ( String [ ] args ) throws Exception {
  Scanner sc = new Scanner ( System . in ) ;
  int n = sc . nextInt ( ) ;
  sc . close ( ) ;
  if ( n == 0 ) {
    System . out . println ( 0 ) ;
    return ;
  }
  int [ ] rem = new int [ 40 ] ;
  for ( int i = 0 ;
  i < rem . length ;
  i ++ ) {
    rem [ i ] = n % - 2 ;
    n /= - 2 ;
    if ( rem [ i ] == - 1 ) {
      n ++ ;
      rem [ i ] = 1 ;
    }
  }
  int i = rem . length - 1 ;
  for ( ;
  i >= 0 ;
  i -- ) {
    if ( rem [ i ] == 1 ) {
      break ;
    }
  }
  for ( ;
  i >= 0 ;
  i -- ) {
    System . out . print ( rem [ i ] ) ;
  }
  System . out . println ( ) ;
}

public static void main ( String [ ] args ) throws Exception { Scanner sc = new Scanner ( System . in ) ; int n = sc . nextInt ( ) ; sc . close ( ) ; if ( n == 0 ) { System . out . println ( 0 ) ; return ; } int [ ] rem = new int [ 40 ] ; for ( int i = 0 ; i < rem . length ; i ++ ) { rem [ i ] = n % - 2 ; n /= - 2 ; if ( rem [ i ] == - 1 ) { n ++ ; rem [ i ] = 1 ; } } int i = rem . length - 1 ; for ( ; i >= 0 ; i -- ) { if ( rem [ i ] == 1 ) { break ; } } for ( ; i >= 0 ; i -- ) { System . out . print ( rem [ i ] ) ; } System . out . println ( ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) (throws (type_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)))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (decimal_integer_literal)))) (return_statement))) (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))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (field_access object: (identifier) field: (identifier))) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (binary_expression left: (identifier) right: (unary_expression operand: (decimal_integer_literal))))) (expression_statement (assignment_expression left: (identifier) right: (unary_expression operand: (decimal_integer_literal)))) (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (unary_expression operand: (decimal_integer_literal)))) consequence: (block (expression_statement (update_expression (identifier))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (field_access object: (identifier) field: (identifier)) right: (decimal_integer_literal)))) (for_statement condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal))) consequence: (block (break_statement))))) (for_statement condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list)))))