//Aleksander Łukasiewicz
#include<bits/stdc++.h>
using namespace std;
#define fru(j,n) for(int j=0; j<(n); ++j)
#define tr(it,v) for(typeof((v).begin()) it=(v).begin(); it!=(v).end(); ++it)
#define x first
#define y second
#define pb push_back
#define mp make_pair
#define ALL(G) (G).begin(),(G).end()
typedef long long LL;
typedef pair<int,int> PII;
typedef vector<int> VI;
const int INF = 1000000009;
int p[] = {2017, 3407, 10331, 14369};
int mod[] = {281862667, 1000*1000*1000+7, 1000*1000*1000+9, 1007113333};
int curr[] = {1, 1, 1, 1};
int h[10], revh[10];
int main(){
int n;
scanf(" %d\n", &n);
char x;
while((x = getchar())){
if(!(x >= 'a' && x <= 'z')) break;
for(int i=0; i<4; i++){
h[i] = ((LL)p[i]*h[i] + x)%mod[i];
revh[i] = ((LL)x*curr[i] + revh[i])%mod[i];
curr[i] = ((LL)curr[i]*p[i])%mod[i];
}
}
for(int i=0; i<4; i++)
if(h[i] != revh[i]){
puts("NIE");
return 0;
}
puts("TAK");
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 | //Aleksander Łukasiewicz #include<bits/stdc++.h> using namespace std; #define fru(j,n) for(int j=0; j<(n); ++j) #define tr(it,v) for(typeof((v).begin()) it=(v).begin(); it!=(v).end(); ++it) #define x first #define y second #define pb push_back #define mp make_pair #define ALL(G) (G).begin(),(G).end() typedef long long LL; typedef pair<int,int> PII; typedef vector<int> VI; const int INF = 1000000009; int p[] = {2017, 3407, 10331, 14369}; int mod[] = {281862667, 1000*1000*1000+7, 1000*1000*1000+9, 1007113333}; int curr[] = {1, 1, 1, 1}; int h[10], revh[10]; int main(){ int n; scanf(" %d\n", &n); char x; while((x = getchar())){ if(!(x >= 'a' && x <= 'z')) break; for(int i=0; i<4; i++){ h[i] = ((LL)p[i]*h[i] + x)%mod[i]; revh[i] = ((LL)x*curr[i] + revh[i])%mod[i]; curr[i] = ((LL)curr[i]*p[i])%mod[i]; } } for(int i=0; i<4; i++) if(h[i] != revh[i]){ puts("NIE"); return 0; } puts("TAK"); return 0; } |
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