Problem:
Score : 200 points

Problem Statement

An integer N is a multiple of 9 if and only if the sum of the digits in the decimal representation of N is a multiple of 9.

Determine whether N is a multiple of 9.

Constraints

0 \leq N < 10^{200000}

N is an integer.

Input

Input is given from Standard Input in the following format:

N

Output

If N is a multiple of 9, print Yes; otherwise, print No.

Sample Input 1

123456789

Sample Output 1

Yes

The sum of these digits is 1+2+3+4+5+6+7+8+9=45, which is a multiple of 9, so 123456789 is a multiple of 9.

Sample Input 2

0

Sample Output 2

Yes

Sample Input 3

31415926535897932384626433832795028841971693993751058209749445923078164062862089986280

Sample Output 3

No

Solution in C# (.NET Core 3.1.201) (judge verdict: Runtime Error)

using System;

class Program {
    static void Main (string[] args) {
        // 整数の入力
        int N = int.Parse (Console.ReadLine ());
        string n = N.ToString ();
        int sum = 0;
        for (int i = 0; i < n.Length; i++)
            sum += int.Parse (n[i].ToString ());
        //出力
        Console.WriteLine (sum % 9 == 0 ? "Yes" : "No");
    }
}