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#include <iostream>
#include <string>

using namespace std;

int tab[2][26];

int main(int argc, char* argv[]) {
	ios_base::sync_with_stdio (false);
	string a,b;
	int i, n;
	cin >> n;
	cin >> a;
	cin >> b;
	for (i=0; i<n; ++i) {
		tab[i&1][a[i]-'a']++;
		tab[i&1][b[i]-'a']--;
	}
	for (i=0; i<26; ++i)
		if(tab[0][i]!=0 || tab[1][i]!=0)
			goto err;

	cout << "TAK\n";
	return 0;

err:
	cout << "NIE\n";
	return 0;
}