using System;
public class Program
{
static int sumd (int a){
int sum = 0;
while (a>0){
sum = sum + (a%10);
a = a/10;
}
return sum;
static void sumdigit (int num){
for (int i=0; i<num; i++){
if (sumd (num) == sumd (i)){
Console.WriteLine(i);
public static void Main()
int a= int.Parse(Console.ReadLine());
int num= int.Parse(Console.ReadLine());
Console.WriteLine(sumd(a));