1 #include <iostream>
 2 #include <cstdio>
 3 using namespace std;
 4 int main()
 5 {
 6     int x,y;
 7     int T;
 8     cin>>T;
 9     while(T--)
10     {
11         cin>>x>>y;
12         if(x-y==0||x-y==2)
13     {
14         if(x-y==0)
15         {
16             if(x%2==0)
17                 cout<<2*x<<endl;
18             else
19                 cout<<2*x-1<<endl;
20         }
21         else
22         {
23             if(x%2==0)
24                 cout<<x+y<<endl;
25             else
26                 cout<<x+y-1<<endl;
27         }
28     }
29     else
30         printf("No Number\n");
31     }
32 }