#include<iostream>

 #include<stdio.h>

 #include<cmath>

 using namespace std;

 int  n , X ;

 double v;

 int l , r ,x ;

 double vy ,vyy;

 double vx ,vxx;

 double ans1 ;

 double ans2 =  ;

 int flag = ;

 double time = ;

 double yy;

 int main()

 {

     scanf("%d%d%lf",&n,&X,&v);

     ans1 = *X/v;

     while(n--)

     {

         scanf("%d%d%lf",&l,&r,&vy);

         x = l - r;

         yy += (l-r)*vy;

     }

     vyy = -yy/X;

     if(fabs(vyy)>=v)

     {

         flag = ;

     }

     vxx = sqrt(v*v - vyy*vyy);

     time = X/vxx;

     if(time>=ans1)

     {

         flag = ;

     }

     if(flag==)

     {

         printf("%.3lf",time);

     }else

     {

         printf("Too hard\n");

     }

     return ;

 }