Week 1 Introduction Part 1

Professor and batteries

Time limit 1 second
Memory limit 128 MiB

There are some packs of batteries on the Professor's table. There are a batteries in each pack. When the Professor took b batteries from each pack, only c batteries remained on the table.

How many packs of batteries were on the table?

Input data

Three positive integers a, b, c.

Output data

Print the number of packs with batteries on the table.


Input example #1
6 3 15
Output example #1