Count-the-Successfull-Withdrawals

An ATM charges Rs. X for each withdrawal. Given initial amount A, find the maximum number of successful withdrawals as the output that can be made when each time Rs. Y is withdrawn.

Boundary Condition(s):
1 <= A, X, Y <= 999999999

Input Format:
The first line contains the amount A, withdrawal charges X and withdrawal amount Y separated by spaces.

Output Format:
The first line contains the count of successful withdrawals.

Example Input/Output 1:
Input:
150 20 40

Output:
2

Example Input/Output 2:
Input:
100 10 10

Output:
5