function schoolCamp(data) {
    var season = data[0];
    var groupType = data[1];
    var countStud = Number(data[2]);
    var countNights = Number(data[3]);
    var totalPrice = 0;
    var pricesMap = {
        "boys": {
            "Spring": 7.20,
            "Summer": 15,
            "Winter": 9.60
          },
        "girls": {
            "Spring": 7.20,
            "Summer": 15,
            "Winter": 9.60
          },
        "mixed": {
            "Spring": 9.50,
            "Summer": 20,
            "Winter": 10
        }
    };
    var activMap = {
        "boys": {
            "Spring": "Tennis",
            "Summer": 'Football',
            "Winter": 'Judo'
          },
        "girls": {
            "Spring": 'Athletics',
            "Summer": 'Volleyball',
            "Winter": "Gymnastics"
          },
        "mixed": {
            "Spring": 'Cycling',
            "Summer": 'Swimming',
            "Winter": 'Ski'
        }
    };
    totalPrice = countNights * countStud * (pricesMap[groupType][season]);
    if (countStud >= 50) {
        totalPrice = totalPrice * 0.50;
    } else if (countStud >= 20 && countStud < 50) {
        totalPrice = totalPrice * 0.85;
    } else if (countStud >= 10 && countStud < 20) {
        totalPrice = totalPrice * 0.95;
    } else {
        totalPrice = totalPrice;
    }
    console.log(`${activMap[groupType][season]} ${totalPrice.toFixed(2)} lv.`);
}