#include <stdio.h>

unsigned sumDigits(unsigned n){
    unsigned sum=0;
    while(n){
        sum+=n%10;
        n=n/10;
    }
    return sum;
}

int main(){
    unsigned n;
    printf("Kerem a szamot: ");
    scanf("%u",&n);
    printf("A szamjegyek osszege %u.\n",sumDigits(n));
    return 0;
}