Write a C++ Code.

A new species of rabbit is found. Scientists decide to analyze the movement of that creature. After applying several lab tests, they understand its algorithm. That rabbit is moving t cm away when it jumps. Then, suddenly, it returns back k cm to jump again. You should help the scientists to calculate how many jumps are needed to go m cm apart from the initial position.

Input Format

Your program will take 3 integer values, t, k, and m, respectively.

Constraints

-

Output Format

One line output will be showing the number of jumps.

Sample Input 0

4 1 5 

Sample Output 0

2