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function translateNum(num: number): number {    const s = String(num);
    const n = s.length;
    const dp = [1, 1];
    for (let i = 2; i < n + 1; i++) {        const o = Number(s[i - 2] + s[i - 1]);
        dp[2] = dp[1] + Number(9 < o && o < 26) * dp[0];        dp.shift();    }    return dp[1];}export default translateNum;