#!/bin/python

import sys

def canConstruct(a):
    # Return "Yes" or "No" denoting whether you can construct the required number.
    s = 0
    for w in a:
        for l in w:
            s += int(l)
    if s % 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(str, raw_input().strip().split(' '))
        result = canConstruct(a)
        print result