Problem:
Score : 200 points

Problem Statement

Let S(n) denote the sum of the digits in the decimal notation of n.
For example, S(101) = 1 + 0 + 1 = 2.

Given an integer N, determine if S(N) divides N.

Constraints

1 \leq N \leq 10^9

Input

Input is given from Standard Input in the following format:

N

Output

If S(N) divides N, print Yes; if it does not, print No.

Sample Input 1

12

Sample Output 1

Yes

In this input, N=12.
As S(12) = 1 + 2 = 3, S(N) divides N.

Sample Input 2

101

Sample Output 2

No

As S(101) = 1 + 0 + 1 = 2, S(N) does not divide N.

Sample Input 3

999999999

Sample Output 3

Yes

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.Text;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
using static System.Console;
using static System.Math;

class Program{
    public static void Main(){
        int sum_n = 0;
        string S = ReadLine();
        int N = int.Parse(S);
        int[] n = new int[S.Length];
        for(int i = 0; i < S.Length; i++){
            n[i] = S[i] - '0';
            sum_n += n[i];
        }
        if(N % sum_n == 0){
            WriteLine("Yes");
        }
        else{
            WriteLine("No");
        }
    } 
}