Problem:
Score : 200 points

Problem Statement

An integer X is called a Harshad number if X is divisible by f(X), where f(X) is the sum of the digits in X when written in base 10.

Given an integer N, determine whether it is a Harshad number.

Constraints

1?N?10^8

N is an integer.

Input

Input is given from Standard Input in the following format:

N

Output

Print Yes if N is a Harshad number; print No otherwise.

Sample Input 1

12

Sample Output 1

Yes

f(12)=1+2=3. Since 12 is divisible by 3, 12 is a Harshad number.

Sample Input 2

57

Sample Output 2

No

f(57)=5+7=12. Since 57 is not divisible by 12, 12 is not a Harshad number.

Sample Input 3

148

Sample Output 3

No

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

using System;
class Program
{
    static void Main(string[] args)
    {
        string line = Console.ReadLine();
        int numX = int.Parse(line);
        int len = line.Length;

        int sum = 0;
        for(int i = 0; i < len; i++)
        {
            int num = int.Parse(line.Substring(i, 1));
            sum = sum + num;
        }
        string ans = "";
        if (numX % sum == 0)
        {
            ans = "Yes";
        }else{
            ans = "No";
        }
        Console.WriteLine(ans);
    }
}