cf 1107B

#include <bits/stdc++.h>
using namespace std;
#define test int t; cin>>t; while (t--)
#define ll long long int
#define fellow_junior  ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
int main()
{
   fellow_junior
   test
   {
       ll a,c,d,e,f,i,j,k,l;
       cin>>a>>c;
       d=(a-1)*9+c;
       cout<<d<<endl;
   }
   return 0;
}