1518. Water Bottles

https://leetcode.com/problems/water-bottles

Description

Given numBottles full water bottles, you can exchange numExchange empty water bottles for one full water bottle.

The operation of drinking a full water bottle turns it into an empty bottle.

Return the maximum number of water bottles you can drink.

Example 1:

**Input:** numBottles = 9, numExchange = 3
**Output:** 13
**Explanation:** You can exchange 3 empty bottles to get 1 full water bottle.
Number of water bottles you can drink: 9 + 3 + 1 = 13.

Example 2:

**Input:** numBottles = 15, numExchange = 4
**Output:** 19
**Explanation:** You can exchange 4 empty bottles to get 1 full water bottle. 
Number of water bottles you can drink: 15 + 3 + 1 = 19.

Example 3:

**Input:** numBottles = 5, numExchange = 5

**Output:** 6

Example 4:

**Input:** numBottles = 2, numExchange = 3

**Output:** 2

Constraints:

• 1 <= numBottles <= 100

• 2 <= numExchange <= 100

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