123456789101112131415161718192021222324
export default function findWinners(matches: number[][]): number[][] {    const gamertolosecount = new Map<number, number>();
    for (const [winner, loser] of matches) {        gamertolosecount.set(winner, gamertolosecount.get(winner) ?? 0);        gamertolosecount.set(loser, (gamertolosecount.get(loser) ?? 0) + 1);    }    const gamerslosezero: number[] = [];    const gamersloseone: number[] = [];
    for (const [gamer, losecount] of gamertolosecount) {        if (losecount === 0) {            gamerslosezero.push(gamer);        }        if (losecount === 1) {            gamersloseone.push(gamer);        }    }    return [        gamerslosezero.sort((a, b) => a - b),        gamersloseone.sort((a, b) => a - b),    ];}