#!/bin/python3

import sys
def sum_digits3(n):
    r = 0
    while n:
        r, n = r + n % 10, n // 10
    return r
def canConstruct(a):
    if sum_digits3(a)%3==0:return "Yes"
    return "No"

if __name__ == "__main__":
    t = int(input().strip())
    for a0 in range(t):
        n = int(input().strip())
        a = list(input().strip().split(' '))
        b="".join(a)
        c=int(b)
        result = canConstruct(c)
        print(result)