Height and Distance!

#include "bits/stdc++.h"

#define faster ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);

#define ll long long int

using namespace std;

int main()

{
    faster
    ll t;
    cin >> t;
    for(int i=0;i<t;i++)
    {
        ll x,y,z;

        cin>>x>>y>>z;

        cout<<(ll)((double)x/(double)sqrt((double)(y-z)/5.0))<<"\n";

    }

}