#include<iostream>
using namespace std;
int main()
{
    int t,n,m;
    cin>>t;
    for(int q=1;q<=t;q++)
    {
        cin>>n>>m;
        if(n%2==0)
        {
            if(m<=n/2)
            {
                cout<<m*2<<endl;
            }
            if(m>n/2)
            {
                cout<<(m-n/2)*2-1<<endl;
            }
        }
        if(n%2==1)
        {
            if(m<=(n-1)/2)
            {
                cout<<m*2<<endl;
            }
            if(m>(n-1)/2)
            {
                cout<<(m-(n-1)/2)*2-1<<endl;
            }
        }
    }
    return 0;
}