function Main(input){
var A = parseInt(input.split(" ")[0],10);
var B = parseInt(input.split(" ")[1],10);
if(A>=13){
  console.log(B);
}else if(A>=6&&A<=12){
  console.log(B/2);
}else{
  console.log(0);
}

}
  Main(require('fs').readFileSync('/dev/stdin','utf8'));