1518.water-bottles.cpp

/*
 * @lc app=leetcode id=1518 lang=cpp
 *
 * [1518] Water Bottles
 */

// @lc code=start
class Solution {
public:
    int numWaterBottles(int numBottles, int numExchange) {

        int ans = numBottles;

        while (numBottles >= numExchange) {
            ans += numBottles / numExchange;
            numBottles = numBottles / numExchange + numBottles % numExchange;
        }

        return ans;
        
    }
};
// @lc code=end