# Introduction In this challenge we will help Chris with two core functions. The first task is to calculate the number of possible moves to climb the stairs within a limited number of steps. The second task is to predict the account platform balance after a transaction with a merchant, taking into account the merchant's bid price and the platform's transaction limit. We need to modify and implement the `climbStairs` and `handlerPrice` methods in `KeysMan.java` to perform these calculations.
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