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;
using System.Collections.Generic;

class Program
{
  static void Main(string[] args)
  {
    long N = long.Parse (Console.ReadLine ());
    
    // var p = Console.ReadLine();
    long s=0;
    long NN=N;
    for (int i = 0; i < 10; i++) {
        s += NN%10;
        NN/=10;
        // char c = p[i];
        // string ss = new String(c);
        // s+=long.Parse (ss);
    }

    // long N= long.Parse (p);

    if (N%s==0){
            Console.WriteLine("yes");
        }else{
            Console.WriteLine("No");
        }
    
  }

}