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#include<bits/stdc++.h>
#define VAR(i,n) __typeof(n) i = (n)
#define loop(i,j,s) for(int i=j;i<s;i++)
#define loopback(i,j,s) for(int i=j;i>=s;i--)
#define foreach(i,c) for(VAR(i,(c).begin());i!=(c).end();i++)
#define pln( x ) cout << x << "\n"
#define ps( x ) cout << x << " "
#define entr cout << "\n"
#define pcnt(i) __builtin_popcount(i)
#define ll long long
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define SIZE(c) (c).size()
#define ALL(c) (c).begin(), (c).end()
using namespace std;
typedef vector<int> VI;
const int INFTY=20000000;
const int MAX=500100;

void coutTab(int* tab,int n){
	loop(i,0,n){
		cout<<tab[i]<<" ";
	}
	cout<<"\n";
}
//------------------------------------------
ll MOD[] = {1190494199, 1000000009, 1190493223};
ll P[] = {101, 37, 17};
ll PC[] = {1, 1, 1};
ll hsh[3];
ll hshb[3];
int main(){
	ios_base::sync_with_stdio(0);
	int n;
	cin>>n;
	char c = 0;
	int m = 1;
	while(cin>>c){
		loop(i,0,m){
			hsh[i] = (hsh[i]*P[i]+c)%MOD[i];
			hshb[i] = (hshb[i] + (PC[i]*c)%MOD[i])%MOD[i];
		}
		loop(i,0,m){
			PC[i]=(PC[i]*P[i])%MOD[i];
		}
	}
	int cnt = 0;
	loop(i,0,m){
		if(hsh[i]==hshb[i]) cnt++;
	}
	if(cnt==1) pln("TAK");
	else pln("NIE");
}