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#include <iostream>
#include <string>

using namespace std;

int t, n, ile; 
string s1, s2;

int main() 
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	
	cin >> t; 

	while (t--)
	{
		int a, b; 
		ile = 0;
		cin >> n; 
		cin >> s1; 
		cin >> s2; 

		for (int i = 0; i < n-1; i++)
		{
			cin >> a >> b;
		}

		for (int i = 0; i < n; i++)
		{
			if (s1[i] != s2[i])
				ile++;
		}

		if (ile == n)
			cout << "NIE\n";
		else
			cout << "TAK\n";	
	}
	return 0;
}