02. SoftUni Karaoke

function softUniKaraoke(input) {
    let participants = input.shift().split(", "),
        songs = input.shift().split(", "),
        info = {};

    while (true) {
        let command = input.shift();
        if (command === "dawn") {
            break;
        }

        let [participant, song, award] = command.split(", ");

        if (participants.includes(participant) && songs.includes(song)) {
            if (!info.hasOwnProperty(participant)) {
                info[participant] = new Set();
            }
            info[participant].add(award);
        }
    }

    info = Object.fromEntries(
        Object.entries(info).sort((a, b) => b[1].size - a[1].size)
    );

    if (Object.keys(info).length > 0) {
        for (let key in info) {
            console.log(`${key}: ${info[key].size} awards`);
            for (let value of Array.from(info[key]).sort()) {
                console.log(`--${value}`);
            }
        }
    } else {
        console.log("No awards");
    }

    return;
}