https://leetcode.cn/problems/water-bottles-ii/

/**
 * @param {number} numBottles
 * @param {number} numExchange
 * @return {number}
 */
var maxBottlesDrunk = function(B, E) {
    let R=0
    let empty=0
    while(true){
        [B,empty,R]=[0,empty+B,R+B]
        if(B==0&&empty<E){
            break
        }
        [B,empty,E]=[1,empty-E,E+1]
    }
    return R
};