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 Java (OpenJDK 11.0.6) (judge verdict: Wrong Answer)

import java.util.Scanner;

public class Main {
	public static void main(String[] args){
		Scanner stdIn = new Scanner(System.in);
		String N = stdIn.next();
		if(N.length() < 8){
			long A = new Long(N);
			if(A % 9 == 0){
				System.out.println("Yes");
			}
			else{
				System.out.println("No");
			}
		}
		else{
			int sum = 0;
			int a = 0;
			for(int i = 0; i < N.length(); i++){
				a = N.charAt(i);
				a = a - 48;
				sum =+ a;
			}
			if(sum % 9 == 0){
				System.out.println("Yes");
			}
			else{
				System.out.println("No");
			}


		}
		stdIn.close();
	}
}