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

#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")

#define int long long

void slv(){
	int D,x,y;cin>>D>>x>>y;

	int g=__gcd(x,y);

	int dx=y/g,dy=x/g;

	int ans=0;

	{
		int t=1e18;

		if(dx){
			t=min(t,(D-x)/dx);
		}

		if(dy){
			t=min(t,y/dy);
		}

		int px=x+dx*t,py=y-dy*t;

		ans=max(ans,abs(px*y-x*py));
	}

	{
		int t=1e18;

		if(dx){
			t=min(t,x/dx);
		}

		if(dy){
			t=min(t,(D-y)/dy);
		}

		int px=x-dx*t,py=y+dy*t;

		ans=max(ans,abs(px*y-x*py));
	}

	cout<<ans<<endl;
}

signed main(){
	int T;cin>>T;
	while(T--){
		slv();
	}
}