function energyBoost(input) {
    let fruit = input[0];
    let sizeSet = input[1];
    let orderedSets = Number(input[2]);
    let packagePrice = 0;
    let discount = 0;

    switch(fruit) {

        case "Watermelon":
            if(sizeSet === "big") {
                packagePrice = 5 * 28.7;
            } else {
                packagePrice = 2 * 56;
            }
        break;
        case "Mango":
            if(sizeSet === "big") {
                packagePrice = 5 * 19.60;
            } else {
                packagePrice = 2 * 36.66;
            }
        break;
        case "Pineapple":
            if(sizeSet === "big") {
                packagePrice = 5 * 24.80;
            } else {
                packagePrice = 2 * 42.10;
            }
        break;
        case "Rasberry":
            if(sizeSet === "big") {
                packagePrice = 5 * 15.20;
            } else {
                packagePrice = 2 * 20;
            }
        break;
    }

    let priceSets = orderedSets * packagePrice;
    if (priceSets >= 400 && priceSets <= 1000) {
        discount = priceSets * 0.15;
    } else if(priceSets >= 1001) {
        discount = priceSets / 2;
    }

    console.log(`${(priceSets - discount).toFixed(2)} lv.`)
}
energyBoost(["Rasberry","small","50"]);