#include <iostream> #include <sstream> #include <string> using namespace std; string longToStr(unsigned long long n) { string str; stringstream strstream; strstream << n; strstream >> str; return str; } bool isPrime(unsigned long long n) { if (n < 2) { return false; } if (n == 2) { return true; } if ((n & 1) == 0) { return false; } for (unsigned long long i = 3; i * i <= n; i += 2) { if (n % i == 0) { return false; } } return true; } bool isSecond(unsigned long long n) { string str = longToStr(n); for (int i = 1; i <= str.length() - 1; i++) { string firstNumber = str.substr(0, i); string secondNumber = str.substr(i); if (secondNumber.substr(0, 1) == "0") { continue; } unsigned long long first = atol(firstNumber.c_str()); unsigned long long second = atol(secondNumber.c_str()); if (isPrime(first) && isPrime(second)) { return true; } } return false; } int main() { unsigned long long n; cin >> n; if (isSecond(n)) { cout << "TAK" << endl; } else { cout << "NIE" << endl; } 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 62 63 64 65 66 67 68 | #include <iostream> #include <sstream> #include <string> using namespace std; string longToStr(unsigned long long n) { string str; stringstream strstream; strstream << n; strstream >> str; return str; } bool isPrime(unsigned long long n) { if (n < 2) { return false; } if (n == 2) { return true; } if ((n & 1) == 0) { return false; } for (unsigned long long i = 3; i * i <= n; i += 2) { if (n % i == 0) { return false; } } return true; } bool isSecond(unsigned long long n) { string str = longToStr(n); for (int i = 1; i <= str.length() - 1; i++) { string firstNumber = str.substr(0, i); string secondNumber = str.substr(i); if (secondNumber.substr(0, 1) == "0") { continue; } unsigned long long first = atol(firstNumber.c_str()); unsigned long long second = atol(secondNumber.c_str()); if (isPrime(first) && isPrime(second)) { return true; } } return false; } int main() { unsigned long long n; cin >> n; if (isSecond(n)) { cout << "TAK" << endl; } else { cout << "NIE" << endl; } return 0; } |