#include <bits/stdc++.h>
using namespace std;

#define INF 0x3f3f3f3f
#define make_pair mp
#define X first
#define Y second
#define pb(x) push_back(x)
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(), (x).end()

typedef tuple<int, int, int> t3;
typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ldb;
typedef vector<int> vi;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<db, db> pdd;
typedef vector<pii> vii;

int IT_MAX = 1 << 17;
const ll MOD = 1000000007;
const ll LL_INF = 0x3f3f3f3f3f3f3f3f;
const db PI = acos(-1);
const db ERR = 1e-10;

template<typename T> T sqr(const T &x) {
    return x * x;
}

ll digit_sum(ll temp)
{
    ll sum = 0;
    while(temp > 0)
    {
        sum += temp % 10;
        temp = temp / 10;
    }
    return sum;
}

int main(void)
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t;cin >> t;
    int n;
    ll x, temp;
    while(t--)
    {
        cin >> n;
        x = 0;
        while(n--)
        {
            cin >> temp;
            x += digit_sum(temp);
        }
        if(x%3)
            cout << "No" << endl;
        else
            cout << "Yes" << endl;
    }
}