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

void FastCode (){
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
}

int main() {

    FastCode();

    int tt;
    cin >> tt;
    while(tt--){
        int a , b ;
        cin >> a >> b ;
        cout << b/2<<endl;
    }

}