// dru.cpp : Defines the entry point for the console application. // // #include "stdafx.h" #include <stdio.h> #include <iostream> typedef long long int lli; static bool IsPrime(lli x) { if (x < 11) { if (x == 2 || x == 3 || x == 5 || x == 7) { return true; } return false; } if (x % 2 == 0 || x % 3 == 0) { return false; } for (lli i = 6;; i += 6) { if (x % (i - 1) == 0) return false; if (x % (i + 1) == 0) return false; if ((i + 1) * (i + 1) >= x) break; } return true; } static bool IsSecond(lli x) { for (lli iDivisor = 10;; iDivisor *= 10) { lli iUpper = x / iDivisor; lli iLower = x % iDivisor; if (iUpper == 0) break; if (iLower / (iDivisor / 10) == 0) continue; if (!IsPrime(iLower)) continue; if (IsPrime(iUpper)) return true; } return false; } int main(int argc, char * argv[]) { lli x; // freopen("input.txt", "r", stdin); // freopen("output.txt", "w", stdout); scanf("%lld", &x); if (IsSecond(x)) { printf("TAK"); } else { printf("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 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | // dru.cpp : Defines the entry point for the console application. // // #include "stdafx.h" #include <stdio.h> #include <iostream> typedef long long int lli; static bool IsPrime(lli x) { if (x < 11) { if (x == 2 || x == 3 || x == 5 || x == 7) { return true; } return false; } if (x % 2 == 0 || x % 3 == 0) { return false; } for (lli i = 6;; i += 6) { if (x % (i - 1) == 0) return false; if (x % (i + 1) == 0) return false; if ((i + 1) * (i + 1) >= x) break; } return true; } static bool IsSecond(lli x) { for (lli iDivisor = 10;; iDivisor *= 10) { lli iUpper = x / iDivisor; lli iLower = x % iDivisor; if (iUpper == 0) break; if (iLower / (iDivisor / 10) == 0) continue; if (!IsPrime(iLower)) continue; if (IsPrime(iUpper)) return true; } return false; } int main(int argc, char * argv[]) { lli x; // freopen("input.txt", "r", stdin); // freopen("output.txt", "w", stdout); scanf("%lld", &x); if (IsSecond(x)) { printf("TAK"); } else { printf("NIE"); } return 0; } |