// Bill Division hackerrank solution javascript
function bonAppetit(bill, k, b) {
  // Write your code here
  let anna = bill[k];
  let total = bill.reduce((x, y) => x + y);
  let totalLessAnna = total - anna;
  let actual = totalLessAnna / 2;
  if (b - actual === 0) {
    console.log("Bon Appetit");
  } else {
    console.log(b - actual);
  }
}