#include<bits/stdc++.h>
using namespace std;
#define FOR(i, a, b) for(int i = a; i <= b; i++)
#define REP(i, a) FOR(i, 0, a - 1)
#define ST first
#define ND second
#define V vector
#define RS resize
#define EB emplace_back
#define ALL(a) a.begin(), a.end()
#define S(a) (int)a.size()
template<class T> void db(T a) { cerr << a; }
template<class L, class R> void db(pair<L, L> a) { cerr << "(" << a.ST << ", " << a.ND << ")"; }
template<class T> void db(V<T> v) { cerr << "{"; REP(i, S(v)) cerr << (i != 0 ? ", " : ""), db(v[i]); cerr << "}"; }
template<class T> void dump(const char *s, T a) { cerr << s << ": "; db(a); cerr << "\n"; }
template<class T, class... TS> void dump(const char *s, T a, TS... x)
{ while(*s != ',') cerr<< *s++; cerr << ": "; db(a); dump(s + 1, x...); }
#ifdef DEBUG
#define DB(...) dump(#__VA_ARGS__, __VA_ARGS__);
#else
#define DB(...)
#endif
using LL = long long;
using PII = pair<int, int>;
using VI = V<int>;
using VLL = V<LL>;
using VVI = V<VI>;
using VPII = V<PII>;
LL mod = 1e9 + 696969;
LL base = 31;
LL rev;
LL p(LL b, LL n)
{
if(n == 0)
return 1;
if(n % 2 == 1)
return (p(b, n - 1) * b) % mod;
LL x = p(b, n / 2);
return (x * x) % mod;
}
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
rev = p(base, mod - 2);
cin.ignore();
LL a = 0, b = 0;
char c;
int n = 0;
while(cin >> c)
{
n++;
a = (a * base) % mod;
b = (b * rev) % mod;
c -= 'a' - 1;
a += c;
b += c;
}
b = (b * p(base, n - 1)) % mod;
cout << (a == b ? "TAK\n" : "NIE\n");
}
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 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | #include<bits/stdc++.h> using namespace std; #define FOR(i, a, b) for(int i = a; i <= b; i++) #define REP(i, a) FOR(i, 0, a - 1) #define ST first #define ND second #define V vector #define RS resize #define EB emplace_back #define ALL(a) a.begin(), a.end() #define S(a) (int)a.size() template<class T> void db(T a) { cerr << a; } template<class L, class R> void db(pair<L, L> a) { cerr << "(" << a.ST << ", " << a.ND << ")"; } template<class T> void db(V<T> v) { cerr << "{"; REP(i, S(v)) cerr << (i != 0 ? ", " : ""), db(v[i]); cerr << "}"; } template<class T> void dump(const char *s, T a) { cerr << s << ": "; db(a); cerr << "\n"; } template<class T, class... TS> void dump(const char *s, T a, TS... x) { while(*s != ',') cerr<< *s++; cerr << ": "; db(a); dump(s + 1, x...); } #ifdef DEBUG #define DB(...) dump(#__VA_ARGS__, __VA_ARGS__); #else #define DB(...) #endif using LL = long long; using PII = pair<int, int>; using VI = V<int>; using VLL = V<LL>; using VVI = V<VI>; using VPII = V<PII>; LL mod = 1e9 + 696969; LL base = 31; LL rev; LL p(LL b, LL n) { if(n == 0) return 1; if(n % 2 == 1) return (p(b, n - 1) * b) % mod; LL x = p(b, n / 2); return (x * x) % mod; } int main() { ios_base::sync_with_stdio(0); cin.tie(0); rev = p(base, mod - 2); cin.ignore(); LL a = 0, b = 0; char c; int n = 0; while(cin >> c) { n++; a = (a * base) % mod; b = (b * rev) % mod; c -= 'a' - 1; a += c; b += c; } b = (b * p(base, n - 1)) % mod; cout << (a == b ? "TAK\n" : "NIE\n"); } |
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