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#include <cstdio>

using namespace std;

long long MOD = 1e9+7;
long long h1, h2;
long long p = 31;
long long pn = 1;

int main()
{
    int n;
    scanf("%d ", &n);
    char c;
    while(true)
    {
        if( scanf("%c", &c) != 1 )
            break;

        if(c == '\n')
            break;
            
        h1 *= p;
        h1 += c;
        h1 %= MOD;
        h2 += pn*c;
        h2 %= MOD;
        pn *= p;
        pn %= MOD;
    }

    if(h1 == h2)
        printf("TAK\n");
    else
        printf("NIE\n");

    return 0;
}