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#include <iostream>
using namespace std;
int letters[50];
char tab[2000010];
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    if(n>0){
        if (n<=2000010){
            for(int i = 0; i<n; i++){
                cin >> tab[i];
            }
            int a = 0;
            int b = (n-1);
            bool pal = true;
            while(a<b){
                if(tab[a]!=tab[b]){
                    pal=false;
                    break;
                }
                a++;
                b--;
            }
            if(pal){
                cout << "TAK";
            }
            else{
                cout << "NIE";
            }
            return 0;
        }
        else{
            int let=97;
            int beg,end;
            if(n%2==0){
                beg=n/2-1000000;
                end=n/2+999999;
            }
            else{
                beg = n/2-1000000;
                end = n/2+1000000;
            }
            int j = 0;
            char pocz[2000];
            int p =1000;
            for(int i = 0; i<n; i++){
                char a;
                cin >> a;
                letters[a-let]++;
                if (i>=beg&&i<=end){
                    tab[j]=a;
                    j++;
                }
                if(i<1000){
                    pocz[i]=a;
                }
                if(i>=n-1000){
                    pocz[p]=a;
                    p++;
                }
            }
            int a = 0;
            int b = 1999999;
            bool pal = true;
            while(a<b){
                if(tab[a]!=tab[b]){
                    pal=false;
                    break;
                }
                a++;
                b--;
            }
            a = 0;
            b = 1999;
            while(a<b){
                if(pocz[a]!=pocz[b]){
                    pal=false;
                    break;
                }
                a++;
                b--;
            }
            int niep = 0;
            for(int i = 0; i<26; i++){
                if(letters[i]%2==1){
                    niep++;
                }
            }
            if(n%2==0){
                if(niep){
                    pal = false;
                }
            }
            else{
                if (niep>1){
                    pal = false;
                }
            }
            if(pal){
                cout << "TAK";
            }
            else{
                cout << "NIE";
            }

        }
    }
    else{
        char a;
        int let = 97;
        int n = 0;
        while(cin >> a){
            n++;
            letters[a-let]++;
        }
        bool pal = true;
        int niep = 0;
        for(int i = 0; i<26; i++){
            if(letters[i]%2==1){
                niep++;
            }
        }
        if(n%2==0){
            if(niep){
                pal = false;
            }
        }
        else{
            if (niep>1){
                pal = false;
            }
        }
        if(pal){
            cout << "TAK";
        }
        else{
            cout << "NIE";
        }
    }
    return 0;
}