A new species of rabbit is found at AGU Sumer Campus. 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