#!/bin/python

import sys

def sum_digits(n):
    r = 0
    while n:
        r, n = r + n % 10, n / 10
    return r

def canConstruct(a):
    # Return "Yes" or "No" denoting whether you can construct the required number.
    res = 0
    for i in range(len(a)):
        res += sum_digits(a[i])
    if res%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