#include <cstdio> #include <cmath> using namespace std; bool IsPrime(long long k) { if (k < 3) return k == 2; for (int i = 2; i <= ceil(sqrt(k)); ++i) { if (k % i == 0) return false; } return true; } int main() { long long n; scanf("%lld", &n); for (long long i = 10; n / i > 0; i *= 10) { const long long first = n / i; const long long second = n % i; if (second >= (i / 10) && IsPrime(first) && IsPrime(second)) { printf("TAK\n"); return 0; } } printf("NIE\n"); 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 | #include <cstdio> #include <cmath> using namespace std; bool IsPrime(long long k) { if (k < 3) return k == 2; for (int i = 2; i <= ceil(sqrt(k)); ++i) { if (k % i == 0) return false; } return true; } int main() { long long n; scanf("%lld", &n); for (long long i = 10; n / i > 0; i *= 10) { const long long first = n / i; const long long second = n % i; if (second >= (i / 10) && IsPrime(first) && IsPrime(second)) { printf("TAK\n"); return 0; } } printf("NIE\n"); return 0; } |