#include<bits/stdc++.h>
using namespace std;
int main()
{
    int test;
    cin>>test;
    while(test--)
    {
        int n; cin>>n;
        vector< int> arr;
        int i, j, x, y;
        for(i=0;i<n;i++)
        {
            cin>>x;
            while(x>0)
            {
                y=x%10; arr.push_back(y);
                x/=10;}
        }
        n=arr.size();
        int sum=0;
        for(i=0;i<n;i++) sum+=arr[i];
        if(sum%3==0) cout<<"Yes";
        else cout<<"No";
        cout<<endl;
    }
}