function solve(input) {
    let fruit = input[0];
    let day = input[1];
    let number = Number(input[2]);
    let price = 0;

    if (day == "Monday" || day == "Tuesday" || day == "Wednesday" || day == "Thursday" || day == "Friday") {
        switch (fruit) {
            case "banana":
                price = number * 2.5;
                break;
            case "apple":
                price = number * 1.2;
                break;
            case "orange":
                price = number * 0.85;
                break;
            case "grapefruit":
                price = number * 1.45;
                break;
            case "kiwi":
                price = number * 2.7;
                break;
            case "pineapple":
                price = number * 5.5;
                break;
            case "grapes":
                price = number * 3.85;
                break;
            default:
                break;
        }
    }

    if (day === "Saturday" || day === "Sunday") {
        switch (fruit) {
            case "banana":
                price = number * 2.7;
                break
            case "apple":
                price = number * 1.25;
                break;
            case "orange":
                price = number * 0.9;
                break;
            case "grapefruit":
                price = number * 1.6;
                break;
            case "kiwi":
                price = number * 3.0;
                break;
            case "pineapple":
                price = number * 5.6;
                break;
            case "grapes":
                price = number * 4.2;
                break;
            default:
                break;
        }
    }

    if (price = 0) {
        console.log("error");
    } else {
        console.log(price.toFixed(2));
    }
}