#!/bin/python3

import sys

def canConstruct(a):
    # Return "Yes" or "No" denoting whether you can construct the required number.
    sum1=0
    for i in range(len(a)):
        a[i]=list(a[i])
    for i in range(len(a)):
        x=a[i]
        for j in range(len(x)):
            sum1=sum1+int(x[j])
    if(sum1%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(' '))
        result = canConstruct(a)
        print(result)