#!/bin/python

import sys

def canConstruct(a):
    som = 0
    for elem in a:
        som += sum(map(int, list(elem)))
        
    if som%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 = raw_input().strip().split(' ')
        result = canConstruct(a)
        print result