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#include <iostream>

#define ull unsigned long long

using namespace std;

class DoubleOnlineHash {
    ull _mod, _base, _curr_base, _hash, _reversed_hash;    

    ull charToUll(char c) {
        return 'z' - c;
    }
public:
    DoubleOnlineHash(ull base, ull mod) : _mod(mod), _base(base), _curr_base(1), _hash(0), _reversed_hash(0) {}

    DoubleOnlineHash& operator+=(char c) {
        _hash *= _base;
        _hash += charToUll(c);
        _hash %= _mod;

        _reversed_hash += (_curr_base * charToUll(c)) % _mod;
        _reversed_hash %= _mod;
        _curr_base = (_curr_base * _base) % _mod;

        return *this;
    }

    ull get_hash() {
        return _hash;
    }

    ull get_reversed_hash() {
        return _reversed_hash;
    }
};

int main() {
    ios_base::sync_with_stdio(false);
    int n;
    cin >> n;
    DoubleOnlineHash h1(127, 1000000007), h2(137, 1000000009), h3(197, 982451653);
    char c;
    while (cin >> c) {
        h1 += c;
        h2 += c;
        h3 += c;
    }
    if (h1.get_hash() == h1.get_reversed_hash() && h2.get_hash() == h2.get_reversed_hash() && h3.get_hash() == h3.get_reversed_hash()) {
        cout << "TAK" << '\n';
    }
    else {
        cout << "NIE" << '\n';
    }
}