/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner sc = new Scanner (System.in);
		double x = sc. nextDouble();
		if (x % 3 == 0)
		{
			System.out.println("Yes");
		}
		else
		{
			System.out.println("No");
		}
	}
}

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

Ng==

6