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Competitions

# Professor and batteries

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

Three positive integers a, b, c.

#### Output

Print the number of packs with batteries on the table.

Time limit 1 second
Memory limit 128 MiB
Input example #1
6 3 15

Output example #1
5