1518-water-bottles

DevGod

Elf Vtuber

Caution

DevGod needs to write an editorial for this problem!

js

/**
 * @param {number} numBottles
 * @param {number} numExchange
 * @return {number}
 */
var numWaterBottles = function(numBottles, numExchange) {
    return numBottles + Math.floor( (numBottles-1)/(numExchange-1) )
};