let denominations = [
  { name: 'ONE HUNDRED', value: 100.00 },
  { name: 'TWENTY', value: 20.00 },
  { name: 'TEN', value: 10.00 },
  { name: 'FIVE', value: 5.00 },
  { name: 'ONE', value: 1.00 },
  { name: 'QUARTER', value: 0.25 },
  { name: 'DIME', value: 0.10 },
  { name: 'NICKEL', value: 0.05 },
  { name: 'PENNY', value: 0.01}
];


function checkCashRegister(price, cash, cid) {
  let change = cash - price;
  let totalCid = cid.reduce((acc, next) => {
    return acc + next[1];
  }, 0.0);
  if (totalCid < change) {
    return 'Insufficient Funds';
  } else if (totalCid === change) {
    return 'Closed';
  }
  cid = cid.reverse();
  let result = denominations.reduce((acc, next, index) => {
    if (change >= next.value) {
      let currentValue = 0.0;
      while (change >= next.value && cid[index][1] >= next.value) {
        currentValue += next.value;
        change -= next.value;
        change = Math.round(change * 100) / 100;
        cid[index][1] -= next.value;
      }
      acc.push([next.name, currentValue]);
      return acc;
    } else {
      return acc;
    }
  }, []);
  return result.length > 0 && change === 0 ? result : 'Insufficient Funds';
}

// Example cash-in-drawer array:
// [["PENNY", 1.01],
// ["NICKEL", 2.05],
// ["DIME", 3.10],
// ["QUARTER", 4.25],
// ["ONE", 90.00],
// ["FIVE", 55.00],
// ["TEN", 20.00],
// ["TWENTY", 60.00],
// ["ONE HUNDRED", 100.00]]

checkCashRegister(19.50, 20.00, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.10], ["QUARTER", 4.25], ["ONE", 90.00], ["FIVE", 55.00], ["TEN", 20.00], ["TWENTY", 60.00], ["ONE HUNDRED", 100.00]]);