#!/usr/bin/env python

indat = [int(x) for x in input().split()]

div = divmod(indat[2], indat[1]+indat[0]-1)
year = div[0] * indat[0]
remain = div[1]

if remain > indat[0]-1:
    year += indat[0]
elif remain > 0:
    year += remain

print(year)