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export default function nextGreaterElement(n: number): number {    let cnt = 1;    let x = n;    while (x >= 10 && Math.floor(x / 10) % 10 >= x % 10) {        cnt++;        x = Math.floor(x / 10);    }    x = Math.floor(x / 10);
    if (x === 0) {        return -1;    }    const target = x % 10;    let x2 = n;    let cnt2 = 0;    while (x2 % 10 <= target) {        x2 = Math.floor(x2 / 10);        cnt2++;    }    x += (x2 % 10) - target;
    const MAX_INT = 2 ** 31 - 1;    for (let i = 0; i < cnt; i++, n = Math.floor(n / 10)) {        const d = i !== cnt2 ? n % 10 : target;        if (x > MAX_INT / 10 || (x === Math.floor(MAX_INT / 10) && d > 7)) {            return -1;        }        x = x * 10 + d;    }    return x;}