1503-last-moment-before-all-ants-fall-out-of-a-plank

/**
 * @param {number} n
 * @param {number[]} left
 * @param {number[]} right
 * @return {number}
 */
var getLastMoment = function(n, left, right) {
    return Math.max(Math.max(...left),n-Math.min(...right));
};