arr

function solve(input) {
    let garages = {};

    for (const line of input) {
        let [garage, carInfo] = line.split(' - ');

        if (!garages.hasOwnProperty(garage)) {
            garages[garage] = [];
        }

        garages[garage].push(carInfo);

    }

    let output = '';
     Object.entries(garages)
        .forEach(([garage, cars]) => {
            output += `Garage № ${garage}\n`;

            for (let currCar of cars) {
                while (currCar.includes(': ')) {
                    currCar = currCar.replace(': ', ' - ');
                }

                output += `--- ${currCar}\n`;
            }
        });
    console.log(output);

}