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#include<iostream>
#include<cstdio>
using namespace std;
long long n,l,ll,r,rr,P=29,P2=29,M=1e12+39,M2=1e11+57;
int a;
int main()
{
    cin>>n;
    getchar();
    while(1)
    {
        a=getchar()-96;
        if(a<1||a>26)break;
        l+=a*P%M;ll+=a*P2%M2;
        l%=M;ll%=M2;
        r+=a;rr+=a;
        r*=29;rr*=29;
        r%=M;rr%=M2;
        P=P*29%M;P2=P2*29%M2;
    }
    if(r==l&&rr==ll)cout<<"TAK";
    else cout<<"NIE";
}