public static void main ( String [ ] args ) {
  Scanner in = new Scanner ( System . in ) ;
  String s1 = in . next ( ) ;
  Set < Character > setS1 = new HashSet < > ( ) ;
  for ( char c : s1 . toCharArray ( ) ) {
    setS1 . add ( c ) ;
  }
  String s2 = in . next ( ) ;
  int flag = - 1 ;
  ;
}

public static void main ( String [ ] args ) { Scanner in = new Scanner ( System . in ) ; String s1 = in . next ( ) ; Set < Character > setS1 = new HashSet < > ( ) ; for ( char c : s1 . toCharArray ( ) ) { setS1 . add ( c ) ; } String s2 = in . next ( ) ; int flag = - 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: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (generic_type (type_identifier) (type_arguments (type_identifier))) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (generic_type (type_identifier) (type_arguments)) arguments: (argument_list)))) (enhanced_for_statement type: (integral_type) name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) body: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))))) (local_variable_declaration type: (type_identifier) 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: (unary_expression operand: (decimal_integer_literal))))))