worldSnookerChampionship

function worldSnookerChampTheBest(input) {

    let stage = input.shift();
    let typeTicket = input.shift();
    let numberOfTickets = parseInt(input.shift());
    let picture = input.shift();

    let sum = 0;

    if (stage == "Quarter final") {
        if (typeTicket == "Standard") {
            sum += numberOfTickets * 55.50;
        } else if (typeTicket == "Premium") {
            sum += numberOfTickets * 105.20;
        } else if (typeTicket == "VIP") {
            sum += numberOfTickets * 118.90;
        }
    } else if (stage == "Semi final") {
        if (typeTicket == "Standard") {
            sum += numberOfTickets * 75.88;
        } else if (typeTicket == "Premium") {
            sum += numberOfTickets * 125.22;
        } else if (typeTicket == "VIP") {
            sum += numberOfTickets * 300.40;
        }
    } else if (stage == "Final") {
        if (typeTicket == "Standard") {
            sum += numberOfTickets * 110.10;
        } else if (typeTicket == "Premium") {
            sum += numberOfTickets * 160.66;
        } else if (typeTicket == "VIP") {
            sum += numberOfTickets * 400;
        }
    }
    if (sum > 4000) {
        sum *= 0.75;
    } else if (sum > 2500) {
        sum *= 0.9;
        if (picture == "Y") {
            sum += numberOfTickets * 40;
        }
    } else {
        if (picture == "Y") {
            sum += numberOfTickets * 40;
        }
    }
    console.log(sum.toFixed(2));

}