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#include<stdio.h>

unsigned long long hashes1[10000];
unsigned long long hashes2[10000];

const unsigned PRIME_MOD1 = 1000000007;
const unsigned K1 = 33;

const unsigned PRIME_MOD2 = 2000000011;
const unsigned K2 = 65599;

const unsigned WINDOW_SIZE = 2048;

unsigned char window[WINDOW_SIZE+1];
unsigned char offset_buffer[WINDOW_SIZE+1];

const unsigned SWITCH_POINT = 1048576;
unsigned char buffer[SWITCH_POINT+1];

long hist[26];

unsigned long djb2(unsigned char *str)
{
    unsigned long long hash = 0;
    int c;

    while (c = *str++)
        hash = (hash * K1 + c)%PRIME_MOD1; /* hash * 33 + c */

    return hash;
}

unsigned long sdbm(unsigned char *str)
{
        unsigned long long hash = 0;
        int c;

        while (c = *str++)
            hash = (hash * K2 + c)%PRIME_MOD2;

        return hash;
}

void reverse(unsigned char *str, long l)
{
    char c;
    //printf("l=%d [%s]->", l, str);
    for(long i=0; i<l/2; i++)
    {
        c = str[i];
        str[i] = str[l-i-1];
        str[l-i-1] = c;
    }
    //printf("[%s]\n", str);
}

int main()
{
    long n;
    bool palindrome = true;

    scanf("%ld", &n);

    char c;
    long i = 0, length = 0, multiplier = 1, direction=1;

    while((c = getchar())!=EOF && (c == ' '||c == '\n' ||c == '\r'||c == '\t'));

    if(n!=0 && n < SWITCH_POINT)
    {
        do
        {
            buffer[i] = c;
            i++;
            length++;

        }while(scanf("%c",&c)==1 && c!='\n' && c!='\r');

        char diff = 0;
        long j=0;
        do{
            diff = buffer[j]-buffer[length-j-1];
            j++;
        }while(diff == 0 && j<length/2);

        if(diff == 0)
            printf("TAK\n");
        else
            printf("NIE\n");

    }else if(n == 0)
    {
        long j, ws, h=0, ret = 1;

        unsigned long long seed_pow_mod_prime1 = 1, seed_pow_mod_prime2 = 1, hash_djb2 = 0, hash_sdbm = 0;
        for(j=0; j<WINDOW_SIZE; j++)
        {
            seed_pow_mod_prime1*=K1;
            seed_pow_mod_prime1%=PRIME_MOD1;

            seed_pow_mod_prime2*=K2;
            seed_pow_mod_prime2%=PRIME_MOD2;
        }

        //printf("Read\n");
        do{

            for(j=0, ws=0; j<WINDOW_SIZE && ret == 1 && c!='\n' && c!='\r'; j++, ws++, i++)
            {
                hist[c-'a']++;
                window[j] = c;
                ret = scanf("%c",&c);
            }

            //printf("Hash1\n");
            window[j] = 0;
            if(ret == 1 && c!='\n' && c!='\r')
            {
                hash_djb2 *= seed_pow_mod_prime1;
                hash_djb2 %= PRIME_MOD1;
                //printf("a. [%x]\n",hashes1[0]);

                hash_sdbm *= seed_pow_mod_prime2;
                hash_sdbm %= PRIME_MOD2;
            }else
            {
                for(j; j>0; j--)
                {
                    hash_djb2 *= K1;
                    hash_djb2 %= PRIME_MOD1;

                    hash_sdbm *= K2;
                    hash_sdbm %= PRIME_MOD2;
                }
                 //printf("b. [%x]\n",hashes1[0]);
            }
            //printf("c. '%s' - [%x]\n",window, djb2(window));
            hash_djb2 += djb2(window);
            hash_djb2 %= PRIME_MOD1;
            //printf("d. [%x]\n",hashes1[0]);

            hash_sdbm += sdbm(window);
            hash_sdbm %= PRIME_MOD2;

            //printf("Reverse\n");
            reverse(window, ws);

            //printf("[%s]", window);
            hashes1[h] = djb2(window);
            //printf("e. '%s' - [%x]\n",window, rev_hashes1[h]);
            hashes2[h++] = sdbm(window);
        }
        while(ret== 1 && c!='\n' && c!='\r');

        unsigned long long rh1 = 0, rh2 = 0;

        for(j=h-1; j>=0; j--)
        {
            rh1*= seed_pow_mod_prime1;
            rh1%= PRIME_MOD1;
            rh1 += hashes1[j];
            rh1%= PRIME_MOD1;
            //printf("f. [%x]\n",rh1);

            rh2*= seed_pow_mod_prime2;
            rh2%= PRIME_MOD2;
            rh2 += hashes2[j];
            rh2%= PRIME_MOD2;
        }
        //printf("rh1=%x hashes1=%x\n", rh1, hashes1[0]);
        if(rh1 == hash_djb2 && rh2 == hash_sdbm)
            palindrome=true;
        else
            palindrome=false;

        bool odd = false;
        for(int j=0; j<26; j++)
            if(hist[j]%2)
               if(i%2==0 || odd)
                {
                    palindrome = false;
                    break;
                }
                else
                    odd = true;

        palindrome?printf("TAK\n"):printf("NIE\n");
    }
    else
    {
        long chunks = n/WINDOW_SIZE, h=0, offset = 0, j;
        if(chunks%2)
            chunks--;

        offset = (n-chunks*WINDOW_SIZE)/2;
        //printf("offset = %d\n", offset);
        i = 1;

        for(int j=0; j<offset; j++, i++)
        {
            hist[c-'a']++;
            offset_buffer[j] = c;
            scanf("%c",&c);
        }

        while(i+offset<n/2)
        {
            for(j=0; j<WINDOW_SIZE; j++, i++)
            {
                hist[c-'a']++;
                window[j] = c;
                scanf("%c",&c);
            }
            window[j] = 0;
            hashes1[h] = djb2(window);
            hashes2[h++] = sdbm(window);
            //printf("a. %d %s -> [djb2=%u] [sdbm=%u]\n", h-1, window, hashes1[h-1], hashes2[h-1]);
        }

        //the mid point reached.
        if(n%2)
        {
            //skip character that is in the middle of the input string
            i++;
            scanf("%c",&c);
        }

        h--;

        unsigned long h_djb2, h_sdbm;
        while(n-i>offset)
        {
            window[WINDOW_SIZE] = 0;
            for(j=WINDOW_SIZE-1; j>=0; j--, i++)
            {
                hist[c-'a']--;
                window[j] = c;
                scanf("%c",&c);
            }

            h_djb2 = djb2(window);
            h_sdbm = sdbm(window);

            //printf("b. %s -> [djb2=%u] [sdbm=%u]\n", window, h_djb2, h_sdbm);

            if(hashes1[h] != h_djb2 || hashes2[h--] != h_sdbm)
            {
                palindrome = false;
                break;
            }
        }

        //Verify the last part - must be same as the offset when read in a reversed order.
        if(palindrome)
        {
            for(int j=offset-1; j>=0; j--, i++)
            {
                hist[c-'a']--;
                if(offset_buffer[j] != c)
                {
                    palindrome = false;
                    break;
                }
                scanf("%c",&c);
            }
        }

        for(int j=0; j<26; j++)
            if(hist[j])
                palindrome=false;

        palindrome?printf("TAK\n"):printf("NIE\n");
    }


    return 0;
}