#!/bin/python

import sys
def ds(a):
    t=0
    while a>0:
        t+=a%10
        a=a//10
    return t
def canConstruct(a):
    # Return "Yes" or "No" denoting whether you can construct the required number.
    c=0
    for i in a:
        c+=ds(i)
    if c%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