IPA_practice2.java

import java.util.*;
public class IPA_practice2 
{
    public static void main(String[]args)
    {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int sum = 0;
        while(n>0)
        {
            int rem = n%10;
            sum = sum+rem;
            n = n/10;
        }
        if (sum%3==0)
        {
            System.out.println("True");
        }
        else{
            System.out.println("False");
        }
    }
}