public static void main ( String [ ] args ) {
  sc = new Scanner ( System . in ) ;
  A = sc . nextInt ( ) ;
  B = sc . nextInt ( ) ;
  N = A + B ;
  if ( B >= A ) {
    System . out . println ( "Impossible" ) ;
  }
  else {
    int honest = getHonest ( ) ;
    char [ ] ans = new char [ N ] ;
    for ( int i = 0 ;
    i < N ;
    i ++ ) {
      ans [ i ] = ask ( honest , i ) ? '1' : '0' ;
    }
    System . out . println ( "! " + String . valueOf ( ans ) ) ;
  }
  sc . close ( ) ;
}

public static void main ( String [ ] args ) { sc = new Scanner ( System . in ) ; A = sc . nextInt ( ) ; B = sc . nextInt ( ) ; N = A + B ; if ( B >= A ) { System . out . println ( " Impossible " ) ; } else { int honest = getHonest ( ) ; char [ ] ans = new char [ N ] ; for ( int i = 0 ; i < N ; i ++ ) { ans [ i ] = ask ( honest , i ) ? '1' : '0' ; } System . out . println ( " ! ▁ " + String . valueOf ( ans ) ) ; } sc . close ( ) ; }
(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 (expression_statement (assignment_expression left: (identifier) right: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier)))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))) alternative: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation 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 (identifier))))) (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 (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (ternary_expression condition: (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier))) consequence: (character_literal) alternative: (character_literal)))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (string_literal) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))