#!/bin/python

import sys

def canConstruct(a):
    # Return "Yes" or "No" denoting whether you can construct the required number.
    ans=0
    for d in "".join(map(str,a)):
        ans+=int(d)
    return ["No","Yes"][ans%3==0]

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