public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  while ( sc . hasNext ( ) ) {
    int t = sc . nextInt ( ) ;
    while ( t -- > 0 ) {
      int a [ ] = new int [ 3 ] ;
      for ( int i = 0 ;
      i < 3 ;
      i ++ ) a [ i ] = sc . nextInt ( ) ;
      Arrays . sort ( a ) ;
      if ( a [ 0 ] == a [ 2 ] ) System . out . println ( 0 ) ;
      else if ( a [ 0 ] == a [ 1 ] ) {
        if ( a [ 0 ] + 1 == a [ 2 ] ) System . out . println ( 0 ) ;
        else System . out . println ( ( a [ 2 ] - a [ 0 ] - 2 ) * 2 ) ;
      }
      else if ( a [ 2 ] == a [ 1 ] ) {
        if ( a [ 0 ] + 1 == a [ 2 ] ) System . out . println ( 0 ) ;
        else System . out . println ( ( a [ 2 ] - a [ 0 ] - 2 ) * 2 ) ;
      }
      else {
        a [ 0 ] ++ ;
        a [ 2 ] -- ;
        System . out . println ( a [ 1 ] - a [ 0 ] + a [ 2 ] - a [ 1 ] + a [ 2 ] - a [ 0 ] ) ;
      }
    }
  }
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; while ( sc . hasNext ( ) ) { int t = sc . nextInt ( ) ; while ( t -- > 0 ) { int a [ ] = new int [ 3 ] ; for ( int i = 0 ; i < 3 ; i ++ ) a [ i ] = sc . nextInt ( ) ; Arrays . sort ( a ) ; if ( a [ 0 ] == a [ 2 ] ) System . out . println ( 0 ) ; else if ( a [ 0 ] == a [ 1 ] ) { if ( a [ 0 ] + 1 == a [ 2 ] ) System . out . println ( 0 ) ; else System . out . println ( ( a [ 2 ] - a [ 0 ] - 2 ) * 2 ) ; } else if ( a [ 2 ] == a [ 1 ] ) { if ( a [ 0 ] + 1 == a [ 2 ] ) System . out . println ( 0 ) ; else System . out . println ( ( a [ 2 ] - a [ 0 ] - 2 ) * 2 ) ; } else { a [ 0 ] ++ ; a [ 2 ] -- ; System . out . println ( a [ 1 ] - a [ 0 ] + a [ 2 ] - a [ 1 ] + a [ 2 ] - a [ 0 ] ) ; } } } }
(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)))))) (while_statement condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (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 (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) 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: (decimal_integer_literal)) update: (update_expression (identifier)) body: (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)))) (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (array_access array: (identifier) index: (decimal_integer_literal)))) consequence: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (decimal_integer_literal)))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (array_access array: (identifier) index: (decimal_integer_literal)))) consequence: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (decimal_integer_literal)) right: (array_access array: (identifier) index: (decimal_integer_literal)))) consequence: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (decimal_integer_literal)))) alternative: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (parenthesized_expression (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (array_access array: (identifier) index: (decimal_integer_literal))) right: (decimal_integer_literal))) right: (decimal_integer_literal))))))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (array_access array: (identifier) index: (decimal_integer_literal)))) consequence: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (decimal_integer_literal)) right: (array_access array: (identifier) index: (decimal_integer_literal)))) consequence: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (decimal_integer_literal)))) alternative: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (parenthesized_expression (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (array_access array: (identifier) index: (decimal_integer_literal))) right: (decimal_integer_literal))) right: (decimal_integer_literal))))))) alternative: (block (expression_statement (update_expression (array_access array: (identifier) index: (decimal_integer_literal)))) (expression_statement (update_expression (array_access array: (identifier) index: (decimal_integer_literal)))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (binary_expression left: (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (array_access array: (identifier) index: (decimal_integer_literal))) right: (array_access array: (identifier) index: (decimal_integer_literal))) right: (array_access array: (identifier) index: (decimal_integer_literal))) right: (array_access array: (identifier) index: (decimal_integer_literal))) right: (array_access array: (identifier) index: (decimal_integer_literal))))))))))))))))