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# (.NET Core 3.1.201) (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 課題1
{
    class Program
    {
        static void Main(string[] args)
        {
            //文字列を取得する
            string str = Console.ReadLine();
            int intInput = int.Parse(str);
            int intNum = str.Length;

            //文字列を一つずる配列に格納する
            //1文字目の文字を取得する
            char c1 = str[0];
            //あ

            string[] strArray = new string[intNum];

            //forを使って1文字ずつ列挙する
            for (int i = 0; i < str.Length; i++)
            {
               strArray[i]=str[i].ToString();
            }

            //合計を格納する変数
            int intSum = 0;

            //for文で配列を回す
            for (int i = 0;i< intNum;i++)
            {
                intSum = intSum + int.Parse(strArray[i]);
                
            }

            //出力
            if(intInput% intSum==0)
            {
                Console.WriteLine("Yes");
            }
            else
            {
                Console.WriteLine("No");
            }
        }


    }

    
}