spring vacation - mid exam

function springVacation(input) {
  let daysOfTrip = Number(input.shift());
  let budget = Number(input.shift());
  let groupPeople = Number(input.shift());
  let priceFuelKm = Number(input.shift());
  let foodPerDayPerPerson = Number(input.shift());
  let hotelPerNightPerPerson = Number(input.shift());
  let travelledDistanceKmDaily = Number(input.shift());

  let diff = 0;

  let allHotel;
  if (groupPeople > 10) {
    allHotel = hotelPerNightPerPerson * groupPeople * daysOfTrip * 0.75;
  } else {
    allHotel = hotelPerNightPerPerson * groupPeople * daysOfTrip;
  }

  let allFood = foodPerDayPerPerson * groupPeople * daysOfTrip;

  let currentExpenses = allFood + allHotel;

  for (let i = 1; i <= daysOfTrip; i++) {
    if (currentExpenses > budget) {
      console.log(
        `Not enough money to continue the trip. You need ${diff}$ more.`
      );
      break;
    }
    let dailyFuel = priceFuelKm * travelledDistanceKmDaily;

    currentExpenses += dailyFuel;
    if (i % 3 === 0 || i % 5 === 0) {
      currentExpenses += currentExpenses * 0.4;
    }

    if (i % 7 === 0) {
      currentExpenses -= currentExpenses / groupPeople;
    }

    travelledDistanceKmDaily = Number(input.shift());

    diff = Math.abs(budget - currentExpenses).toFixed(2);
  }
  if (budget >= currentExpenses) {
    console.log(
      `You have reached the destination. You have ${diff}$ budget left.`
    );
  } else {
    console.log(
      `Not enough money to continue the trip. You need ${diff}$ more.`
    );
  }
}