public static void main ( String [ ] args ) {
  Scanner scn = new Scanner ( System . in ) ;
  int N = scn . nextInt ( ) ;
  long [ ] A = new long [ N ] ;
  for ( int i = 0 ;
  i < N ;
  i ++ ) {
    A [ i ] = scn . nextLong ( ) ;
  }
  Arrays . sort ( A ) ;
  int ans = 0 ;
  int count = 0 ;
  long buf = 0 ;
  for ( int i = 0 ;
  i < N ;
  i ++ ) {
    if ( buf == A [ i ] ) {
      count ++ ;
    }
    else {
      if ( count % 2 == 1 && count != 0 ) {
        ans ++ ;
      }
      count = 1 ;
      buf = A [ i ] ;
    }
  }
  if ( count % 2 == 1 ) {
    ans ++ ;
  }
  System . out . println ( ans ) ;
}

public static void main ( String [ ] args ) { Scanner scn = new Scanner ( System . in ) ; int N = scn . nextInt ( ) ; long [ ] A = new long [ N ] ; for ( int i = 0 ; i < N ; i ++ ) { A [ i ] = scn . nextLong ( ) ; } Arrays . sort ( A ) ; int ans = 0 ; int count = 0 ; long buf = 0 ; for ( int i = 0 ; i < N ; i ++ ) { if ( buf == A [ i ] ) { count ++ ; } else { if ( count % 2 == 1 && count != 0 ) { ans ++ ; } count = 1 ; buf = A [ i ] ; } } if ( count % 2 == 1 ) { ans ++ ; } System . out . println ( ans ) ; }
(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: (method_invocation object: (identifier) 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: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (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))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (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: (identifier)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (array_access array: (identifier) index: (identifier)))) consequence: (block (expression_statement (update_expression (identifier)))) alternative: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal)) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) consequence: (block (expression_statement (update_expression (identifier))))) (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))) (expression_statement (assignment_expression left: (identifier) right: (array_access array: (identifier) index: (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 (update_expression (identifier))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))