#!/bin/python3

import sys

def canConstruct(a):
    # Return "Yes" or "No" denoting whether you can construct the required number.
    s=''
    for i in a:
        s=s+i
    tmp=0
    for i in s:
        tmp+=int(i)
    if tmp%3==0:print("Yes")
    else : print("No")

if __name__ == "__main__":
    t = int(input().strip())
    for a0 in range(t):
        n = int(input().strip())
        a = list(map(str, input().strip().split(' ')))
        canConstruct(a)