#include <iostream>
#include <vector>

using namespace std;
#define limit 101
#define Max(a,b) ((a) > (b) ? (a) : (b))
long a[limit][limit];

long max(long l1, long l2)
{
    return l1 > l2 ? l1 : l2;
}
int main()
{
    int T,n;
    
    cin >> T;
    while (T--)
    {
        cin >> n;
        for (int i = 1; i <= n; i++)
        {
            for (int j = 1; j <= i; j++)
                cin >> a[i][j];
        }
        for (int i = n-1; i >=1; i--)
        {
            for (int j = 1; j <= n-1; j++)
            {
                a[i][j] += Max(a[i + 1][j], a[i + 1][j + 1]);
            }
        }
        cout << a[1][1] << endl;
    }
    
    return 0;
}