public static void main ( String [ ] args ) {
  int t , n ;
  Scanner sc = new Scanner ( System . in ) ;
  t = sc . nextInt ( ) ;
  while ( t -- > 0 ) {
    n = sc . nextInt ( ) ;
    int [ ] c = new int [ 3 ] ;
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      c [ sc . nextInt ( ) % 3 ] ++ ;
    }
    System . out . println ( solve ( c , n / 3 ) ) ;
  }
}

public static void main ( String [ ] args ) { int t , n ; Scanner sc = new Scanner ( System . in ) ; t = sc . nextInt ( ) ; while ( t -- > 0 ) { n = sc . nextInt ( ) ; int [ ] c = new int [ 3 ] ; for ( int i = 0 ; i < n ; i ++ ) { c [ sc . nextInt ( ) % 3 ] ++ ; } System . out . println ( solve ( c , n / 3 ) ) ; } }
(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: (integral_type) declarator: (variable_declarator name: (identifier)) declarator: (variable_declarator name: (identifier))) (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)))))) (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (while_statement condition: (parenthesized_expression (binary_expression left: (update_expression (identifier)) right: (decimal_integer_literal))) body: (block (expression_statement (assignment_expression left: (identifier) right: (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 (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 (expression_statement (update_expression (array_access array: (identifier) index: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (decimal_integer_literal))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (method_invocation name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (decimal_integer_literal)))))))))))