function main(input){
  const args=input.split(' ');
  const A=parseInt(args[0], 10);
  const B=parseInt(args[1], 10);
  if(A>=13){
    console.log(B);
  }else if(A>=6){
    console.log(B/2);
  }else{
    console.log(0);
  }
}

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