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# include <iostream>
# include <algorithm>
# include <string>
using namespace std;
int main()
{
	ios_base::sync_with_stdio(0);
	int ilo,g,c,d,e,f=false;
	string a,b;
	cin>>ilo>>a>>b;
	if(a==b){
		cout<<"TAK";
	}else
	{
		for (int i=0;i<ilo;i++)
		{

			if(a[i]!=b[i])
			{
				g=i;
				e=-1;
				f=false;
				while(g<ilo)
				{
					if(a[i]==b[g] && (g-i+1)%2==1 && e==-1)
					{

						e=g;
						f=true;
					}
					g++;
				}
				if(f==false)
				{
				cout<<"NIE";
				break;
				}
				if(f==true){

				d=i;
				while(d!=e)
				{
					swap(b[d],b[e]);
					d++;e--;
				}
				}
			}
		}
		if(a==b)
		{
			cout<<"TAK";
		}
	}

	return 0;
}