#!/bin/python

import sys

def canConstruct(a):
    i=0
    d1=0
    while i<len(a):
        i1=0
        while i1<len(a[i]):
            d1=d1+int(a[i][i1])
            i1=i1+1
        i=i+1
    if d1%3==0:
        return 'Yes'
    else:
        return 'No'
    # Return "Yes" or "No" denoting whether you can construct the required number.

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