#include <iostream>
#include <string>

using namespace std;

const int MAXX = 105;

int tower[MAXX][MAXX];

int max(int x, int y){
	if (x > y)return x;
	return y;
}

void solve(int n){
	for (int i = n - 1; i >= 0; --i){
		for (int j = 0; j <= i; ++j){
			tower[i][j] += max(tower[i + 1][j], tower[i + 1][j + 1]);
		}
	}
}

int main(){
	//freopen("in.txt", "r", stdin);
	int c, n;

	cin >> c;

	while (c--){
		cin >> n;

		memset(tower, 0, sizeof(tower));
		for (int i = 0; i < n; ++i){
			for (int j = 0; j < n; ++j){
				if (i >= j)cin >> tower[i][j];
			}
		}

		solve(n);

		printf("%d\n",tower[0][0]);
	}
}