1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
#include <iostream>

using namespace std;

typedef long long ll;

const ll P = 211LL;
const ll Q = 1000000009LL;

int main() {
    ios_base::sync_with_stdio(false);
    int n;
    cin >> n;
    char c;

    ll big_endian = 0, little_endian = 0;

    ll curr_P = 1;

    ll new_addition;

    while(cin >> c) {
        big_endian *= P;
        big_endian %= Q;
        big_endian += c - 'a';
        big_endian %= Q;

        new_addition = (c - 'a') * curr_P;
        new_addition %= Q;

        little_endian += new_addition;
        little_endian %= Q;

        curr_P *= P;
        curr_P %= Q;
    }

    cout << (big_endian == little_endian ? "TAK" : "NIE") << endl;

    return 0;
}