Scanner kb= new Scanner (System.in);

String inputString=kb.next();

boolean result=false;

for (int i=0; i<inputString.length-2; i++)
//Loop how ever many letters there are minus 2 times
{
  if (inputString.substr(i,1)=="b" && inputString.substr(i+2,1)) {
    result=true;
  }

}

System.out.println(result);