public class Agam
{
    public static int subs(int[] arr)
    {
        int sum;
        int total = 0;
        for (int i = 0;i<arr.length;i++)
        {
            sum=0;
            for(int j = i;j<arr.length;j++)
            {
                sum = (sum+arr[j])%3;
                if(sum == 0)
                    total++;
            }
        }
        return total;
    }
    public static void main(String args[])
    {
        int nums[] = {6,1,4,124,3,6,512,3,1,33,2,2,32,100,813,4,41,1,3,8,213,5,7,61,8,42,1,4,2,20,8};
        System.out.println(subs(nums));
        System.out.println("See?");
    }
}