public static void main ( String [ ] args ) {
  Scanner scan = new Scanner ( System . in ) ;
  int num = scan . nextInt ( ) ;
  ArrayList < String > cases = new ArrayList ( ) ;
  ArrayList < String > ones = new ArrayList ( ) ;
  ArrayList < Integer > score = new ArrayList ( ) ;
  int alice = 0 ;
  int gameCounter = 0 ;
  String one = "" ;
  for ( int i = 0 ;
  i < num ;
  i ++ ) cases . add ( scan . next ( ) ) ;
  for ( int i = 0 ;
  i < num ;
  i ++ ) {
    for ( int j = 0 ;
    j < cases . get ( i ) . length ( ) ;
    j ++ ) {
      if ( cases . get ( i ) . charAt ( j ) == '1' ) {
        one = one . concat ( "1" ) ;
        if ( ! one . equals ( "" ) && j == cases . get ( i ) . length ( ) - 1 ) ones . add ( one ) ;
      }
      else {
        if ( ! one . equals ( "" ) ) ones . add ( one ) ;
        one = "" ;
      }
    }
    while ( ! ones . isEmpty ( ) ) {
      if ( gameCounter % 2 == 0 ) {
        alice += Collections . max ( ones ) . length ( ) ;
      }
      gameCounter ++ ;
      ones . remove ( ones . indexOf ( ( Collections . max ( ones ) ) ) ) ;
    }
    score . add ( alice ) ;
    alice = 0 ;
    ones . clear ( ) ;
    one = "" ;
    gameCounter = 0 ;
  }
  for ( int i = 0 ;
  i < score . size ( ) ;
  i ++ ) System . out . println ( score . get ( i ) ) ;
}

public static void main ( String [ ] args ) { Scanner scan = new Scanner ( System . in ) ; int num = scan . nextInt ( ) ; ArrayList < String > cases = new ArrayList ( ) ; ArrayList < String > ones = new ArrayList ( ) ; ArrayList < Integer > score = new ArrayList ( ) ; int alice = 0 ; int gameCounter = 0 ; String one = " " ; for ( int i = 0 ; i < num ; i ++ ) cases . add ( scan . next ( ) ) ; for ( int i = 0 ; i < num ; i ++ ) { for ( int j = 0 ; j < cases . get ( i ) . length ( ) ; j ++ ) { if ( cases . get ( i ) . charAt ( j ) == '1' ) { one = one . concat ( "1" ) ; if ( ! one . equals ( " " ) && j == cases . get ( i ) . length ( ) - 1 ) ones . add ( one ) ; } else { if ( ! one . equals ( " " ) ) ones . add ( one ) ; one = " " ; } } while ( ! ones . isEmpty ( ) ) { if ( gameCounter % 2 == 0 ) { alice += Collections . max ( ones ) . length ( ) ; } gameCounter ++ ; ones . remove ( ones . indexOf ( ( Collections . max ( ones ) ) ) ) ; } score . add ( alice ) ; alice = 0 ; ones . clear ( ) ; one = " " ; gameCounter = 0 ; } for ( int i = 0 ; i < score . size ( ) ; i ++ ) System . out . println ( score . get ( i ) ) ; }
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