#include <iostream> #include <vector> #include <algorithm> int countInv(std::vector<int>& series) { int count = 0; for(auto it = series.begin(); it != series.end(); ++it) { for(auto i = it+1; i != series.end(); ++i) { if(*it > *i) ++count; } } return count; } bool isStabile(std::vector<int>& series) { std::vector<int> rev; rev.reserve(series.size()); for(auto a : series) { rev.push_back(a); } std::reverse(std::begin(rev), std::end(rev)); if(countInv(series) == countInv(rev)) { return true; } return false; } int main() { int n; unsigned long long k; std::cin >> n >> k; unsigned long long count = 0; if(n<4) { std::cout << "NIE\n"; return 0; } std::vector<int> series; for(int i=0; i<n; ++i) { series.push_back(i+1); } do { if(isStabile(series)) { ++count; if(count == k) { std::cout << "TAK\n"; for(auto& a : series) std::cout << a << ' '; return 0; } //std::cout << "I: " << countInv(series) << " :: "; //for(auto& a : series) std::cout << a << ' '; //std::cout << '\n'; } } while(std::next_permutation(series.begin(), series.end())); std::cout << "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 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 | #include <iostream> #include <vector> #include <algorithm> int countInv(std::vector<int>& series) { int count = 0; for(auto it = series.begin(); it != series.end(); ++it) { for(auto i = it+1; i != series.end(); ++i) { if(*it > *i) ++count; } } return count; } bool isStabile(std::vector<int>& series) { std::vector<int> rev; rev.reserve(series.size()); for(auto a : series) { rev.push_back(a); } std::reverse(std::begin(rev), std::end(rev)); if(countInv(series) == countInv(rev)) { return true; } return false; } int main() { int n; unsigned long long k; std::cin >> n >> k; unsigned long long count = 0; if(n<4) { std::cout << "NIE\n"; return 0; } std::vector<int> series; for(int i=0; i<n; ++i) { series.push_back(i+1); } do { if(isStabile(series)) { ++count; if(count == k) { std::cout << "TAK\n"; for(auto& a : series) std::cout << a << ' '; return 0; } //std::cout << "I: " << countInv(series) << " :: "; //for(auto& a : series) std::cout << a << ' '; //std::cout << '\n'; } } while(std::next_permutation(series.begin(), series.end())); std::cout << "NIE\n"; return 0; } |