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#include <bits/stdc++.h>
using namespace std;
#define show if(0)
int n=0,x=1,a=0,buf,mid,l;
bool error=0;
int first[26]{0},second[26]{0};

int main(){
  cin>>l;
  if(l>0&&l<3999990){
    string s;
    cin>>s;
    for(int i=0;i<l/2+1;i++){
      if(s[i]!=s[l-1-i])
        error=1;
    }
  }
  else{
    do{
      x=getchar()-97;
      if(x==-87)
        a++;
      if(x!=-87&&a>0){
        n++;
        show
          cout<<x<<endl;
        if(n==1)
          mid=x;
        else{
          if(n==2){
            first[mid]++;
            mid=x;
            second[x]++;
          }
          else{
            if(n%2==1){
              second[mid]--;
              second[x]++;
              buf=x;
            }
            else{
              first[mid]++;
              second[x]++;
              mid=buf;
            }
          }
        }
        show{
          for(int i=0;i<26;i++){
            cout<<i<<" f "<<first[i]<<endl;
            cout<<i<<" s "<<second[i]<<endl;
          }
          cout<<endl;
        }
      }
    }while(x!=-87||a<2);
    show{
      cout<<"dlugosc: "<<n<<endl;
      for(int i=0;i<26;i++){
        cout<<i<<" f "<<first[i]<<endl;
        cout<<i<<" s "<<second[i]<<endl;
      }
      cout<<endl;
    }
    for(int i=0;i<26;i++){
      if(first[i]!=second[i]){
        error=1;
      }
    }
  }
  if(error)
    cout<<"NIE"<<endl;
  else
    cout<<"TAK"<<endl;
  return 0;
}