#!/bin/python

import sys

def canConstruct(a):
    digitsSum = 0
    for numIdx in xrange(len(a)):
        num = a[numIdx]
        while (num > 0):
            digit = num % 10
            num = num / 10
            digitsSum += digit
    
    if (digitsSum %3 == 0):
        return "Yes"
    else:
        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