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export default function lengthLongestPath(input: string): number {    const folder_current: string[] = [];    const files_path: Set<string> = new Set();    for (const line of input.split("\n")) {        // console.log(line)        if (!line.includes("\t")) {            if (line.includes(".")) {                files_path.add(line);            } else {                folder_current.length = 0;                folder_current.push(line);            }        } else {            // folder_current.length = 1 + count_char(line, '\t')            if (line.includes(".")) {                folder_current.length = count_char(line, "\t");                files_path.add(                    [...folder_current, line.replaceAll("\t", "")].join("/"),                );            } else {                folder_current.length = 1 + count_char(line, "\t");                folder_current[folder_current.length - 1] = line.replaceAll(                    "\t",                    "",                );            }        }    }    // console.log(files_path)    // console.log(folder_current)    return Math.max(0, ...Array.from(files_path.keys()).map((a) => a.length));}
function count_char(s: string, c: string): number {    let count = 0;    s.replaceAll(c, (a) => (count++, a));    return count;}