Author:  M. Sporyshev  Time limit:  1 sec  
Input file:  Standard input  Memory limit:  512 Mb  
Output file:  Standard output 
Young road constructor Vasya decided to pave a road with asphalt. The road is a straight line segment L meters long.
Vasya can pave a continuous segment of A meters of road per day. To avoid potential cracks on the borders between segments paved on different days, Vasya decided to overlap segments. Specifically:
Your program must calculate the total number of meters that Vasya will pave.
Input contains three integers L A B.
Output must contain a single integer — the total number of meters paved.
1 ≤ L, A, B ≤ 100
A > B
No.  Standard input  Standard output 

1 


2 


3 

