#include <bits/stdc++.h>
using namespace std;
long long Q = 1e9 +33;
long long v(char c)
{
return (c - 'a');
}
long long pot(long long a,long long k)
{
if(k==0)
return 1;
if(k%2==1)
return (a*pot(a,k-1)%Q);
long long e=pot(a,k/2);
return((e*e)%Q);
}
int main()
{
int n;
cin >> n;
char c;
long long p = 37;
long long H1 = 0;
long long H2 = 0;
long long r = pot(p,Q-2);
long long k = 0;
while(cin >> c)
{
k++;
H1 += v(c);
H1 = (H1 * p) % Q;
H2 += v(c);
H2 = (H2 * r) % Q;
}
long long p_pot = pot(p,k+1);
H2 = (H2 * p_pot) % Q;
if( H1 == H2 )
cout << "TAK";
else
cout << "NIE";
return 0;
}
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 | #include <bits/stdc++.h> using namespace std; long long Q = 1e9 +33; long long v(char c) { return (c - 'a'); } long long pot(long long a,long long k) { if(k==0) return 1; if(k%2==1) return (a*pot(a,k-1)%Q); long long e=pot(a,k/2); return((e*e)%Q); } int main() { int n; cin >> n; char c; long long p = 37; long long H1 = 0; long long H2 = 0; long long r = pot(p,Q-2); long long k = 0; while(cin >> c) { k++; H1 += v(c); H1 = (H1 * p) % Q; H2 += v(c); H2 = (H2 * r) % Q; } long long p_pot = pot(p,k+1); H2 = (H2 * p_pot) % Q; if( H1 == H2 ) cout << "TAK"; else cout << "NIE"; return 0; } |
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