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#include <iostream>
using namespace std;
int n;
string a, b;
int cnt[2][128];
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin >> n >> a >> b;
    for (int i=0; i<n; i++) cnt[i%2][a[i]]++;
    for (int i=0; i<n; i++) cnt[i%2][b[i]]--;
    bool fail = false;
    for (char c='a'; c<='z'; c++) if (cnt[0][c] || cnt[1][c]) fail = true;
    cout << (fail ? "NIE\n" : "TAK\n");
    return 0;
}