mid_exam-burgerBus

function solve(input) {
    let arr = input
    let numberOfCities = arr.shift();

    let totalProfit = 0
    let totalExpenses = 0
    citiesVisit = 0

    for (let i = 0; i<numberOfCities * 3; i+=3) {
        citiesVisit++

        let cityname = arr[i]
        let cityProfit = arr[i + 1]
        let cityExpenses = arr[i + 2]

        if (citiesVisit % 5 == 0) {      // rainy day, no special evenets
            // losses 10% of the money
            cityProfit = cityProfit*0.9
        } else if (citiesVisit % 3 == 0) {      // special event
            // + 50% expenses
            cityExpenses = cityExpenses*1.5
        }

        totalProfit = totalProfit + Number(cityProfit) - Number(cityExpenses)
        console.log(`In ${cityname} Burger Bus earned ${(cityProfit-cityExpenses).toFixed(2)} leva.`)
    }
    console.log(`Burger Bus total profit: ${totalProfit.toFixed(2)} leva.`)
}