#!/bin/python3

import sys

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

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