Problem:
Score : 100 points

Problem Statement

A biscuit making machine produces B biscuits at the following moments: A seconds, 2A seconds, 3A seconds and each subsequent multiple of A seconds after activation.

Find the total number of biscuits produced within T + 0.5 seconds after activation.

Constraints

All values in input are integers.

1 \leq A, B, T \leq 20

Input

Input is given from Standard Input in the following format:

A B T

Output

Print the total number of biscuits produced within T + 0.5 seconds after activation.

Sample Input 1

3 5 7

Sample Output 1

10

Five biscuits will be produced three seconds after activation.

Another five biscuits will be produced six seconds after activation.

Thus, a total of ten biscuits will be produced within 7.5 seconds after activation.

Sample Input 2

3 2 9

Sample Output 2

6

Sample Input 3

20 20 19

Sample Output 3

0

Solution in Julia (0.5.0) (judge verdict: Runtime Error)

parseInt(x) = parse(Int,x)
function main()
	n = map(parseInt, split(readline()))[1]
    a = map(parseInt, split(readline()))
  gl = zeros(Int,1,n)
  gr = zeros(Int,1,n)
  for i = 1 : n-1	
  	gl[i+1] = gcd(gl[i],a[i])
    gr[i+1] = gcd(gr[i],a[end-i+1])
  end
  g = zeros(Int,n)
  for i = 1 : n
    g[i] = gcd(gl[i],gr[i])
  end
    println(Int64(maximum(g)))
end
main()