function solve (budget, season, fishers) {
    budget = Number(budget);
    fishers = Number(fishers);

    let rent;
    switch(season) {
        case "Spring":
            rent = 3000;
            break;
        case "Summer":
        case "Autumn":
            rent = 4200;
            break;
        case "Winter":
            rent = 2600;
            break;
    }
    if (fishers <= 6) {
        rent = rent * 0.9;
    } else if (fishers >= 7 && fishers <= 11 ) {
        rent = rent * 0.15;
    } else {
        rent = rent * 0.75;
    }
    if (fishers % 2 === 0 && season !== "Autumn") {
        rent = rent * 0.95;
    }
    let money = Math.abs(budget - rent).toFixed(2);
    if (budget >= rent) {
        console.log(`Yes! You have ${money} leva left.`);
    } else {
        console.log(`Not enough money! You need ${money} leva.`);
    }

}

solve("3000",
"Summer",
"11");

solve("2000",
"Winter",
"13");