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#include <iostream>
using namespace std;

int a[30][2];

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin >> n;
    string s, w;
    cin >> s >> w;
    for (int i = 0; i < n; i++)
    {
        a[s[i] - 'a'][i&1]++;
        a[w[i] - 'a'][i&1]--;
    }
    for (int i = 0; i <= 28; i++)
    {
        if (a[i][0] || a[i][1])
        {
            cout << "NIE";
            return 0;
        }
    }
    cout << "TAK";
}