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function intersectionSizeTwo(intervals: number[][]): number {    intervals.sort((a, b) => {        return a[1] < b[1] || (a[1] === b[1] && a[0] > b[0]) ? -1 : 1;    });
    let last1 = -1;    let last2 = -1;    let res = 0;    for (const q of intervals) {        if (q[0] > last2) {            last1 = q[1] - 1;            last2 = q[1];            res += 2;        } else if (q[0] > last1) {            last1 = last2;            last2 = q[1];            res++;        }    }    return res;}export default intersectionSizeTwo;