#include <bits/stdc++.h>

using namespace std;

#define FOR(i, a, b) for(int i = (a); i < (b); i++)
#define RFOR(i, a, b) for(int i = (a) - 1; i >= (b); i--)
#define SZ(a) int(a.size())
#define ALL(a) a.begin(), a.end()
#define PB push_back
#define MP make_pair
#define F first
#define S second

typedef long long LL;
typedef vector<int> VI;
typedef pair<int, int> PII;
typedef double db;

const int mod = 1e9 + 9;
int mult(int a, int b)
{
	return (LL) a * b % mod;
}
int add(int a, int b)
{
	return a + b < mod ? a + b : a + b - mod;
}
int sub(int a, int b)
{
	return a - b >= 0 ? a - b : a - b + mod;
}
void updAdd(int& a, int b)
{
	a += b;
	if(a >= mod)
		a -= mod;
}

const int N = 174;
//[l, r)
string s[N][N];
//[l, r), [isRight][pos][left]
int dp[N][N][2][N][9];

void solve()
{
	int n;
	cin >> n;
	VI a(n);
	FOR(i, 0, n)
		cin >> a[i];
	FOR(l, 0, n)
	{
		int sum = 0;
		FOR(r, l, n + 1)
		{
			if(r == l)
				s[l][r] = "";
			else
				s[l][r] = to_string(sum);
				
			if(r != n)
				sum += a[r];
		
		}
	}
	FOR(l, 0, n)
	FOR(r, l, n + 1)
	FOR(k, 0, 2)
	FOR(pos, 0, n + 1)
	FOR(len, 0, 9)
		dp[l][r][k][pos][len] = 0;
		
	dp[0][n][0][0][0] = 1;
	
	FOR(l, 0, n)
	{		
		RFOR(r, n + 1, l)
		{
			FOR(pos, 0, n + 1)
			{
				FOR(len, 0, 9)
				{	
					//isRight = 0;
					//cerr << "order " << l << " " << r << " " << pos << " " << len << endl;
					if(dp[l][r][0][pos][len] != 0)
					{						
						int val = dp[l][r][0][pos][len];
						
						//cout << "here1 " << l << " " << r <<  " " << 0 << " " << pos << " " << len << endl;
					
						FOR(k, l, r)
						{
							if(SZ(s[k][r]) > len)
							{
								string L = s[pos][l].substr(SZ(s[pos][len]) - len, len);
								string R = s[k][r].substr(SZ(s[k][r]) - len, len);
								
								reverse(ALL(L));
								if(L == R)
								{
									updAdd(dp[l][k][1][r][SZ(s[k][r]) - len], val);
							//		cerr << l << " " << k << " " << 1 << " " << r << " " << SZ(s[k][r]) << " " << len << " " << val << endl;
								}
								continue;
							}
							else
							{
								string L = s[pos][l].substr(SZ(s[pos][len]) - len, SZ(s[k][r]));
								string R = s[k][r];
								
								reverse(ALL(L));
								if(L == R)
									updAdd(dp[l][k][0][pos][len - SZ(s[k][r])], val);
								continue;
							}
						}
					}
					//isRight = 1
					if(dp[l][r][1][pos][len] != 0)
					{						
						int val = dp[l][r][1][pos][len];
						//cout << "here2 " << l << " " << r <<  " " << 1 << " " << pos << " " << len << endl;
						
						FOR(k, l + 1, r + 1)
						{
							if(SZ(s[l][k]) >= len)
							{
								string L = s[r][pos].substr(0, len);
								string R = s[l][k].substr(0, len);
								
								reverse(ALL(L));
								if(L == R)
									updAdd(dp[k][r][0][l][SZ(s[l][k]) - len], val);
								continue;
							}
							else
							{
								string L = s[r][pos].substr(len - SZ(s[l][k]), SZ(s[l][k]));
								string R = s[l][k];
								
								reverse(ALL(L));
								if(L == R)
									updAdd(dp[k][r][1][pos][len - SZ(s[l][k])], val);
								continue;
							}
						}
					}
				}
			}
		}
	}
	int ans = 0;
	FOR(l, 0, n)
		FOR(k, 0, 2)
			FOR(pos, 0, n + 1)
				FOR(len, 0, 9)
					{
						if(dp[l][l][k][pos][len] == 0)
							continue;
						string cur;
						if(k == 0)
						{
							cur = s[pos][l].substr(SZ(s[pos][l]) - len, len);
						}
						else
						{
							cur = s[l][pos].substr(0, len);
						}
						string rcur = cur;
						reverse(ALL(rcur));
						if(rcur == cur)
							updAdd(ans, dp[l][l][k][pos][len]);
					}
	cout << ans << "\n"; 
}




int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	
	int t;
	cin >> t;
	while(t--)
		solve();
	
	
	return 0;
}