public static void main ( String [ ] args ) {
  Scanner input = new Scanner ( System . in ) ;
  int t = input . nextInt ( ) ;
  while ( t -- > 0 ) {
    char [ ] s = input . next ( ) . toCharArray ( ) ;
    LinkedList < Integer > list = new LinkedList < > ( ) ;
    for ( int i = 0 ;
    i < s . length ;
    i ++ ) {
      int counter = 0 ;
      while ( i <= s . length - 1 && s [ i ] == '1' ) {
        counter ++ ;
        i ++ ;
      }
      if ( counter > 0 ) list . add ( counter ) ;
    }
    Collections . sort ( list , new Reverse ( ) ) ;
    int result = 0 ;
    for ( int i = 0 ;
    i < list . size ( ) ;
    i += 2 ) {
      result += list . get ( i ) ;
    }
    System . out . println ( result ) ;
  }
}

public static void main ( String [ ] args ) { Scanner input = new Scanner ( System . in ) ; int t = input . nextInt ( ) ; while ( t -- > 0 ) { char [ ] s = input . next ( ) . toCharArray ( ) ; LinkedList < Integer > list = new LinkedList < > ( ) ; for ( int i = 0 ; i < s . length ; i ++ ) { int counter = 0 ; while ( i <= s . length - 1 && s [ i ] == '1' ) { counter ++ ; i ++ ; } if ( counter > 0 ) list . add ( counter ) ; } Collections . sort ( list , new Reverse ( ) ) ; int result = 0 ; for ( int i = 0 ; i < list . size ( ) ; i += 2 ) { result += list . get ( i ) ; } System . out . println ( result ) ; } }
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