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: Wrong Answer)

using System;
using System.Linq;

namespace B
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] input = Console.ReadLine().ToCharArray().Select(i => Convert.ToInt32(i.ToString())).ToArray();
            long N = 0;
            long SN = 0;
            for (var i = input.Length - 1; i >= 0; i--)
            {
                N += (long)Math.Pow(10, i) * input[i];
                SN += input[i];
            }
            string ans = (N % SN == 0) ? "Yes" : "No";
            Console.WriteLine(ans);
        }
    }
}