int sum (int);
int a[100][100];
int main ()
{
	int n, i, j, k;
	cin >> n;
	for (i = 1; i <= n; i++)
	{
		for (j = 0; j < n; j++)
		{
			for (k = 0; k < n; k++)
				cin >> a[j][k];
		}
		cout << sum(n) << endl;
	}
	return 0;
}

int sum (int n)
{
	int i, j, min;
	for (i = 0; i < n; i++)
	{
		min = a[i][0];
		for (j = 1; j < n; j++)
		{
			if (a[i][j] < min)
				min = a[i][j];
		}
		for (j = 0; j < n; j++)
			a[i][j] -= min;
	}
	for (i = 0; i < n; i++)
	{
		min = a[0][i];
		for (j = 1; j < n; j++)
		{
			if (a[j][i] < min)
				min = a[j][i];
		}
		for (j = 0; j < n; j++)
			a[j][i] -= min;
	}
	if (n == 2)
		return a[1][1];
	int k = a[1][1];
	for (i = 1; i < n - 1; i++)
	{
		a[0][i] = a[0][i + 1];
		a[i][0] = a[i + 1][0];
		for (j = 1; j < n - 1; j++)
			a[i][j] = a[i + 1][j + 1];
	}
	return k + sum (n - 1);
}
