public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  TreeSet < String > in = new TreeSet ( ) ;
  int z = 0 ;
  while ( sc . hasNext ( ) ) {
    String s = sc . nextLine ( ) ;
    if ( s . charAt ( 0 ) == '+' ) {
      in . add ( s . substring ( 1 ) ) ;
    }
    else if ( s . charAt ( 0 ) == '-' ) {
      in . remove ( s . substring ( 1 ) ) ;
    }
    else {
      String s1 [ ] = s . split ( ":" ) ;
      if ( s1 . length > 1 ) {
        z += in . size ( ) * s1 [ 1 ] . length ( ) ;
      }
    }
  }
  System . out . println ( z ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; TreeSet < String > in = new TreeSet ( ) ; int z = 0 ; while ( sc . hasNext ( ) ) { String s = sc . nextLine ( ) ; if ( s . charAt ( 0 ) == ' + ' ) { in . add ( s . substring ( 1 ) ) ; } else if ( s . charAt ( 0 ) == ' - ' ) { in . remove ( s . substring ( 1 ) ) ; } else { String s1 [ ] = s . split ( " : " ) ; if ( s1 . length > 1 ) { z += in . size ( ) * s1 [ 1 ] . length ( ) ; } } } System . out . println ( z ) ; }
(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: (generic_type (type_identifier) (type_arguments (type_identifier))) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (while_statement condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal))) right: (character_literal))) consequence: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal))))))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal))) right: (character_literal))) consequence: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal))))))) alternative: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal))))) (if_statement condition: (parenthesized_expression (binary_expression left: (field_access object: (identifier) field: (identifier)) right: (decimal_integer_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (method_invocation object: (array_access array: (identifier) index: (decimal_integer_literal)) name: (identifier) arguments: (argument_list)))))))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))