permutations_1070.cpp (287B)
1 #include <iostream> 2 3 int main() { 4 int n; 5 std::cin >> n; 6 if (n == 2 || n == 3) { 7 std::cout << "NO SOLUTION" << std::endl; 8 } else { 9 for (int i = 2; i <= n; i += 2) 10 std::cout << i << " "; 11 for (int i = 1; i <= n; i += 2) 12 std::cout << i << " "; 13 std::cout << std::endl; 14 } 15 }