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#include <iostream>

using namespace std;

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	
	int N;
	char ch;
	long lhash = 0;
	long rhash = 0;
	long MOD = 1000033;
	long lastPower = 1;
	long counter = 0;

	cin >> N;

	while (cin >> ch) {
		counter++;
		int k = (ch - 'a') + 1;
		lhash = (lhash * 31 + k) % MOD;
		if (counter == 1) {
			lastPower = 1;
		}
		else {
			lastPower = (31 * lastPower) % MOD;
		}
		rhash = (rhash + lastPower*k) % MOD;
	}

	if (lhash == rhash) {
		cout << "TAK";
	}
	else {
		cout << "NIE";
	}

	return 0;
}