#!/bin/python3

import sys

def canConstruct(A):
    # Return "Yes" or "No" denoting whether you can construct the required number.
    digits = []
    for a_i in A:
        digits += list(map(int, list(a_i)))
    if sum(digits) % 3 == 0:
        return "Yes"
    else:
        return "No"

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