#!/bin/python

import sys
def canConstruct(a):
    # Return "Yes" or "No" denoting whether you can construct the required number.
    digits = 0
    for num in a :
        s = str(num)
        for c in s :
            digits += int(c)
    return "Yes" if digits%3 == 0 else "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