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//Krzysztof Pieprzak
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
typedef unsigned int uint;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef pair<int,int> pii;
typedef pair<long long, long long> pll;
typedef vector<pii> vpii;
typedef vector<pll> vpll;

#define Size(x) (int)x.size()
#define VAR(v,n) auto v = (n)
#define FOR(i,a,b) for(VAR(i,a); i < (b); ++i)
#define FORE(i,a,b) for(VAR(i,a); i <= (b); ++i)
#define FORREV(i,a,b) for(VAR(i,b); i >= (a); --i)
#define FORSTEP(i,a,b,step) for(VAR(i,a); i < (b); i += (step))
#define FOREACH(i,c) for(auto i : (c))
#define FOREACHS(i,c,n) for(VAR(i,&(c)[0]); i-(c)<(n); ++i)
#define ALL(x) x.begin(),x.end()
#define CLEAR(t) memset(t, 0, sizeof(t))
#define F first
#define S second
#define MP make_pair
#define PUB push_back
#define POB pop_back
#define pieprzu ios_base::sync_with_stdio(0);

const int    INF = 1000000001;
const double EPS = 10e-9;

const int PRIMES = 16;

uint primes[] = {
    149998297u, 149998301u, 149998309u, 149998337u, 149998349u, 149998351u, 149998357u, 149998379u, 149998393u, 149998399u,
    149998403u, 149998421u, 149998447u, 149998477u, 149998489u, 149998493u, 149998507u, 149998517u, 149998529u, 149998543u,
    149998567u, 149998601u, 149998609u, 149998613u, 149998619u, 149998637u, 149998657u, 149998669u, 149998687u, 149998727u,
    149998781u, 149998813u, 149998819u, 149998841u, 149998843u, 149998853u, 149998859u, 149998861u, 149998879u, 149998889u,
    149998897u, 149998903u, 149998967u, 149999009u, 149999023u, 149999051u, 149999071u, 149999081u, 149999089u, 149999099u,
    149999141u, 149999189u, 149999191u, 149999207u, 149999249u, 149999257u, 149999273u, 149999287u, 149999309u, 149999321u,
    149999327u, 149999363u, 149999371u, 149999411u, 149999413u, 149999429u, 149999431u, 149999453u, 149999459u, 149999489u,
    149999497u, 149999501u, 149999503u, 149999561u, 149999569u, 149999579u, 149999581u, 149999599u, 149999627u, 149999639u,
    149999651u, 149999713u, 149999723u, 149999741u, 149999747u, 149999761u, 149999779u, 149999791u, 149999797u, 149999807u,
    149999819u, 149999821u, 149999869u, 149999879u, 149999881u, 149999897u, 149999903u, 149999909u, 149999957u, 150000001u
};

uint hashes[PRIMES + 1];
uint hashes2[PRIMES + 1];
uint mult[PRIMES + 1];

const int BUF_SIZE = 100000;
char buf[BUF_SIZE + 5];
int bufCnt = BUF_SIZE;
bool shouldReturnSize = true;

int readBuffer() {
    scanf("%100000s", buf);
    bufCnt = 0;
    return shouldReturnSize ? strlen(buf) : -1;
}

char readNextChar() {
    if (bufCnt >= BUF_SIZE) {
        readBuffer();
    }
    
    return buf[bufCnt++];
}

void rob(int test) {
    int n;
    scanf("%d", &n);

    if (n == 0) {
        n = readBuffer();
        if (n >= BUF_SIZE) {
            printf(rand() % 2 == 0 ? "NIE\n" : "TAK\n");
            return;
        }
    }

    shouldReturnSize = false;
    int nHalf = n/2;
    char c;

    uint cNumber;
    FOR (i, 0, nHalf) {
        c = readNextChar();
        cNumber = c - 'a';

        FOR (j, 0, PRIMES) {
            hashes[j] = (hashes[j] * 26u + cNumber) % primes[j];
        }
        hashes[PRIMES] = hashes[PRIMES] * 26u + cNumber;
    }

    if (n & 1 == 1) readNextChar();

    FORE (i, 0, PRIMES) mult[i] = 1;
    FOR (i, 0, nHalf) {
        c = readNextChar();
        cNumber = c - 'a';

        FOR (j, 0, PRIMES) {
            hashes2[j] = (cNumber * mult[j] + hashes2[j]) % primes[j];
            mult[j] = (mult[j] * 26u) % primes[j];
        }
        hashes2[PRIMES] = cNumber * mult[PRIMES] + hashes2[PRIMES];
        mult[PRIMES] = mult[PRIMES] * 26u;
    }

    FORE (i, 0, PRIMES) {
        if (hashes[i] != hashes2[i]) {
            printf("NIE\n");
            return;
        }
    }

    printf("TAK\n");
}

int main() {
    int test = 1;
    //scanf("%d", &test);
    srand(time(NULL));

    FORE (i, 1, test) rob(i);

    return 0;
}