#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;



int main()
{
    ll n,i,j,k,x,t,cas=1;
    cin>>t;
    while(t--)
    {
        cin>>n;
        bool flag=0;
        for(i=0;i<n;i++)
        {
            cin>>x;
            if(x%3!=0)
                flag=1;
        }
        cout<<"Case #"<<cas++<<": ";
        if(flag==1)
            cout<<"No"<<endl;
        else
            cout<<"Yes"<<endl;
    }
    return 0;
}