Day-8(Q1)

#include <iostream>
using namespace std;

int main() {
	// your code goes here
	int t;
	cin>>t;
	while(t--)
	{
	    int a,n,i;
	    cin>>a;
	    
	    cin>>n;
	    if(a < n*2)
	    {
	        cout<< 0<<endl;
	    }
	    else
	    {
	        cout<<a/(2*n)<<endl;
	    }
	}
	return 0;
}