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#include <cstdio>

const long long POWER = 33ll;
const long long P = 9576890767ll; // duza liczba pierwsza

int main()
{
    long long h1 = 0ll, h2 = 0ll, mul = 1ll;
    long long x;
    char c;
    
    scanf("%lld\n", &x);

    while (scanf("%c", &c) > 0 && c != '\n')
    {
        h1 = h1 + mul * c;
        if (h1 > P)
        {
            h1 %= P;
        }
        h2 = h2 * POWER + c;
        if (h2 > P)
        {
            h2 %= P;
        }
        mul = mul * POWER;
        if (mul > P)
        {
            mul %= P;
        }
    }

    printf("%s", h1 == h2 ? "TAK" : "NIE");

    return 0;
}