(() => {
    let storage = {
        protein: 0,
        carbohydrate: 0,
        fat: 0,
        flavour: 0
    };

    let robot = {
        restock: function (microelement, quantity) {
            storage[microelement] += quantity;
            return 'Success';
        },
        prepare: function (recipe, quantity) {
            return 'Success';
        },
        report: function () {
            let protein = storage['protein'];
            let carb = storage['carbohydrate'];
            let fat = storage['fat'];
            let flavour = storage['flavour'];
            return `protein=${protein} carbohydrate=${carb} fat=${fat} flavour=${flavour}`;
        },
    };

    return function management(line) {
        let args = line.split(' ');

        if (args[0] === 'restock') {
            let microelement = args[1];
            let quantity = Number(args[2]);
            return robot.restock(microelement, quantity);
        } else if (args[0] === 'prepare') {
            let recipe = args[1];
            let quantity = Number(args[2]);
            return robot.prepare(recipe, quantity);
        }

        return robot.report();
    }
})();