static int CoinTossEndAmount(int betAmount, String coinTossResults) {

         if (betAmount <=0 || coinTossResults.length() == 0) return betAmount;

         long Amount = betAmount;

         long onebet = 1;

         for (int i=0; i<coinTossResults.length(); i++) {

             if (coinTossResults.charAt(i) == 'H') {

                 Amount += onebet;

                 onebet *= 2;

             }

             else {

                 Amount -= onebet;

                 onebet /= 2;

             }

             if (Amount < onebet) return 0;

             if (onebet < 1) onebet = 1;

         }

         return (int)Amount;

     }