#!/bin/python3

import sys

def canConstruct(a):
    return 'Yes' if sum(list(map(int, list(''.join(a))))) % 3 == 0 else 'No'

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