function fitnessCard (input) {
    let budget = Number(input[0]);
    let gender = input[1];
    let age = Number(input[2]);
    let sport = input[3];
    let price = 0;

    switch(sport) {
        case "Gym":
            if (gender === "m") {
                price = 42;
            } else {
                price = 35;
            }
        break;
        case "Boxing":
            if (gender === "m") {
                price = 41;
            } else {
                price = 37;
            }
        break;
        case "Yoga":
            if (gender === "m") {
                price = 45;
            } else {
                price = 42;
            }
        break;
        case "Zumba":
            if (gender === "m") {
                price = 34;
            } else {
                price = 31;
            }
        break;
        case "Dances":
            if (gender === "m") {
                price = 51;
            } else {
                price = 53;
            }
        break;
        case "Pilates":
            if (gender === "m") {
                price = 39;
            } else {
                price = 37;
            }
        break;
    }

    if (age <= 19) {
        price = price - (price * 0.20);
    }

    let diff = Math.abs(price - budget);

    if (price <= budget) {
        console.log(`You purchased a 1 month pass for ${sport}.`)
    } else {
        console.log(`You don't have enough money! You need $${diff.toFixed(2)} more.`)
    }
}