#include <bits/stdc++.h>
using namespace std;

void mainSolve()
{
  int N, X;
  cin >> N >> X;
  cout << (2 * N + 1 - X) << endl;
}

int main()
{
  int t;
  cin >> t;
  while (t--)
  {
    mainSolve();
  }
  return 0;
}