Problem Solving

Even Odds.cpp

#include <iostream>

using namespace std;

int main() {

    long long n, k, check, pos;
    cin >> n >> k;
    if (n % 2 == 0)
        check = n / 2;
    else
        check = (n / 2) + 1;
    if (k <= check)
        pos = (k * 2) - 1;
    else
        pos = (k - check) * 2;
    cout << pos;

    return 0;
}