

Peter's SmokesPeter has n cigarettes. He smokes them one by one, keeping all the butts. Out of k > 1 butts, he can roll a new cigarette. How many cigarettes can Peter have? Input SpecificationThe input is a sequence of lines. Each line contains two integer numbers giving the values of n and k. The input is terminated by endoffile (EOF). Output SpecificationFor each line of input, output one integer number on a separate line giving the maximum number of cigarettes that Peter can have. Sample Input
Output for Sample Input


University of Debrecen; Faculty of Informatics; v. 03/19/2018 