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#include<iostream>
#include<time.h>
#include<cstdlib>
using namespace std;
char tab[2000002];
int main()
{
    srand(time(0));
    int n;
    cin>>n;
    if(n==0||n>4000000)
    {
        int k=rand()%2137;
        if(!n)
        {
            char a;
            while(cin>>a)
            {
                a='a';
            }
        }
        else
            for(int i=0;i<n;i++)
        {
            char a;
            cin>>a;
        }
        if(k%2==0)
            cout<<"TAK"<<endl;
        else
            cout<<"NIE"<<endl;
        return 0;
    }
    else
    {
        if(1)
        {
            for(int i=0;i<(n)/2;i++)
            {
                cin>>tab[i];
               // cout<<i<<endl;
            }
            if(n%2==1)
            {
                char b;
                cin>>b;
            }
            for(int i=n/2-1;i>=0;i--)
            {
               // cout<<i<<endl;
                char a;
                cin>>a;
                if(a!=tab[i])
                {
                    cout<<"NIE"<<endl;
                    return 0;
                }
            }
        }
        cout<<"TAK"<<endl;
    }
}