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export function encode(longUrl: string): string {    if (longtoshort.has(longUrl)) {        return longtoshort.get(longUrl) || "";    }    longtoshort.set(longUrl, String(count));    shorttolong.set(String(count), longUrl);
    return String(count++);}
export function decode(shortUrl: string): string {    return shorttolong.get(shortUrl) || "";}let count = 0;const longtoshort = new Map<string, string>();const shorttolong = new Map<string, string>();