public static void main ( String [ ] args ) {
  Scanner in = new Scanner ( System . in ) ;
  int l = 0 ;
  int c = 0 ;
  String s ;
  while ( in . hasNextLine ( ) ) {
    s = in . nextLine ( ) ;
    if ( s . charAt ( 0 ) == '+' ) c ++ ;
    else if ( s . charAt ( 0 ) == '-' ) c -- ;
    else {
      l += c * ( s . length ( ) - s . indexOf ( ':' ) - 1 ) ;
    }
  }
  System . out . println ( l ) ;
}

public static void main ( String [ ] args ) { Scanner in = new Scanner ( System . in ) ; int l = 0 ; int c = 0 ; String s ; while ( in . hasNextLine ( ) ) { s = in . nextLine ( ) ; if ( s . charAt ( 0 ) == ' + ' ) c ++ ; else if ( s . charAt ( 0 ) == ' - ' ) c -- ; else { l += c * ( s . length ( ) - s . indexOf ( ' : ' ) - 1 ) ; } } System . out . println ( l ) ; }
(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: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier))) (while_statement condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) body: (block (expression_statement (assignment_expression left: (identifier) right: (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: (expression_statement (update_expression (identifier))) 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: (expression_statement (update_expression (identifier))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (character_literal)))) right: (decimal_integer_literal))))))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))