public static void main ( String [ ] args ) {
  FastScanner fs = new FastScanner ( ) ;
  String s = fs . next ( ) ;
  int dels = 0 ;
  Stack < Character > st = new Stack < > ( ) ;
  for ( int i = 0 ;
  i < s . length ( ) ;
  i ++ ) {
    if ( st . size ( ) > 0 ) {
      if ( s . charAt ( i ) == st . peek ( ) ) {
        st . pop ( ) ;
        dels ++ ;
      }
      else {
        st . push ( s . charAt ( i ) ) ;
      }
    }
    else {
      st . push ( s . charAt ( i ) ) ;
    }
  }
  if ( dels % 2 == 0 ) {
    System . out . println ( "NO" ) ;
  }
  else {
    System . out . println ( "YES" ) ;
  }
}

public static void main ( String [ ] args ) { FastScanner fs = new FastScanner ( ) ; String s = fs . next ( ) ; int dels = 0 ; Stack < Character > st = new Stack < > ( ) ; for ( int i = 0 ; i < s . length ( ) ; i ++ ) { if ( st . size ( ) > 0 ) { if ( s . charAt ( i ) == st . peek ( ) ) { st . pop ( ) ; dels ++ ; } else { st . push ( s . charAt ( i ) ) ; } } else { st . push ( s . charAt ( i ) ) ; } } if ( dels % 2 == 0 ) { System . out . println ( " NO " ) ; } else { System . out . println ( " YES " ) ; } }
(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)))) (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: (decimal_integer_literal))) (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)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (decimal_integer_literal))) consequence: (block (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) consequence: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) (expression_statement (update_expression (identifier)))) alternative: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))))))) alternative: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))))))