HDOJ(HDU) 1555 How many days?(水题)

import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()){
            int m = sc.nextInt();
            int k = sc.nextInt();
            if(m==0&&k==0){
                return ;
            }
            int day=0;
            int kt=0;
            while(m>0){
                m--;
                day++;
                kt++;
                if(kt==k){
                    kt=0;
                    m++;
                }
            }
            System.out.println(day);
        }
    }
}