using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
class Solution {

    static string canConstruct(int[] a) {
        // Return "Yes" or "No" denoting whether you can construct the required number.
        List<int> listOfInts = new List<int>();
        
        for(var i = 0; i< a.Length; ++i)
        {
            var num = a[i];
            while(num > 0)
            {
                listOfInts.Add(num % 10);
                num = num / 10;
            }
        }
        var aSum = listOfInts.Sum();
        
        return (aSum % 3 == 0) ? "Yes" : "No"; 
    }

    static void Main(String[] args) {
        int t = Convert.ToInt32(Console.ReadLine());
        for(int a0 = 0; a0 < t; a0++){
            int n = Convert.ToInt32(Console.ReadLine());
            string[] a_temp = Console.ReadLine().Split(' ');
            int[] a = Array.ConvertAll(a_temp,Int32.Parse);
            string result = canConstruct(a);
            Console.WriteLine(result);
        }
    }
}