#include <bits/stdc++.h>
using namespace std;
int main()
{
	int n,r;
	cin>>n;
	
	for (int i=1;i<=n;i++)
	{
		float x,y;
		cin>>x>>y>>r;
		float j=sqrt(x*x+y*y);
		
		float time=((j/50.0)*2+1.5*r);
		float ztime;
		ztime+=time;
		cout<<ceil(ztime)<<endl;
	}
	return 0;
}