public class easy{ public static int soucet(int cislo) { int s = 0; int help = cislo; while (help != 0){ s += help % 10; help /= 10; } return s; } public static void main (String [] args)throws java.io.IOException { String line; int num; java.io.BufferedReader in = new java.io.BufferedReader(new java.io.InputStreamReader(System.in)); while (((line = in.readLine())!= null && !line.equals("0"))){ int cislo = Integer.parseInt(line); // System.out.println(cislo); int s = soucet(cislo); //System.out.println(s); for (int i = 11; i < 100000; i++){ if (soucet(cislo * i) == s){ System.out.println(i); break; } } } } }