#include<iostream>
using namespace std;
int main()
{
int out,n,x,y;
cin>>n;
while(n--)
{
cin>>x>>y;
if(x==y||x-y==2)
{
if(x%2==0)
out=x+y;
else
out=x+y-1;
cout<<out<<endl;
}
else
cout<<"No Number"<<endl;
}
return 0;
}
轉載于:https://www.cnblogs.com/VRS_technology/archive/2010/05/12/1733427.html