#!/bin/python

import sys

def SumDigits(arr):
    sum = 0
    
    for a in arr:
        while a != 0:
            sum+=a%10
            a=a/10
    
    return sum

def canConstruct(a):
    # Return "Yes" or "No" denoting whether you can construct the required number.
    if SumDigits(a)%3==0:
        return "Yes"
    return "No"
    
if __name__ == "__main__":
    t = int(raw_input().strip())
    for a0 in xrange(t):
        n = int(raw_input().strip())
        a = map(int, raw_input().strip().split(' '))
        result = canConstruct(a)
        print result