public static void main ( String [ ] args ) {
  Scanner in = new Scanner ( System . in ) ;
  int x = 0 ;
  int y = 0 ;
  for ( char c : in . next ( ) . toCharArray ( ) ) {
    if ( c == 'x' ) {
      x ++ ;
    }
    else {
      y ++ ;
    }
  }
  char [ ] array ;
  if ( x >= y ) {
    x -= y ;
    array = new char [ x ] ;
    Arrays . fill ( array , 'x' ) ;
  }
  else {
    y -= x ;
    array = new char [ y ] ;
    Arrays . fill ( array , 'y' ) ;
  }
  System . out . println ( new String ( array ) ) ;
}

public static void main ( String [ ] args ) { Scanner in = new Scanner ( System . in ) ; int x = 0 ; int y = 0 ; for ( char c : in . next ( ) . toCharArray ( ) ) { if ( c == ' x ' ) { x ++ ; } else { y ++ ; } } char [ ] array ; if ( x >= y ) { x -= y ; array = new char [ x ] ; Arrays . fill ( array , ' x ' ) ; } else { y -= x ; array = new char [ y ] ; Arrays . fill ( array , ' y ' ) ; } System . out . println ( new String ( array ) ) ; }
(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: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (enhanced_for_statement type: (integral_type) name: (identifier) value: (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (character_literal))) consequence: (block (expression_statement (update_expression (identifier)))) alternative: (block (expression_statement (update_expression (identifier))))))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))) (expression_statement (assignment_expression left: (identifier) right: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (character_literal))))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))) (expression_statement (assignment_expression left: (identifier) right: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (character_literal)))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (object_creation_expression type: (type_identifier) arguments: (argument_list (identifier))))))))