Being a nonconformist, Volodya is displeased with the current state of things, particularly with the order of natural numbers (natural number is positive integer number). He is determined to rearrange them. But there are too many natural numbers, so Volod

#include <iostream>
using namespace std;
int main()
{
	long long int n, k,temp;
	cin >> n >> k;
   if(n%2==0)
   {
	   if (k <= n / 2)
	   {
		   temp = 2 * k - 1;
		   cout << temp << endl;
	   }
	   else 
	   {   temp = 2 * (k - n / 2); 
	       cout << temp << endl; 
	   }
   }
   else
   {
	     if (k <= n / 2+1)
	     {
		   temp = 2 * k - 1;
		   cout << temp << endl;
	     }
	     else
	     {
		   temp = 2 * (k - n / 2-1);
		   cout << temp << endl;
	     }
   }
	return 0;
}