#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define maxn 5005
short n,test;
int sum,x;

void Nhap()
{
    cin>>n;
    for (int i=0;i<n;i++)
    {
        cin>>x;
        while (x>0)
        {
            sum+=x%10;
            x/=10;
        }
    }
}

void process()
{

}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin>>test;
    for (int t=0;t<test;t++)
    {
        sum=0;
        Nhap();
        //process();
        if (sum%3==0) cout<<"Yes"; else cout<<"No";
        cout<<"\n";
    }
	Nhap();
	process();
}