import java.util.*;
import java.lang.*;
import java.io.*;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner in = new Scanner(System.in);
	 	double v1, v2, s, t, p, p1;
	 	v1 = in.nextDouble();
        v2 = in.nextDouble();
	 	s = in.nextDouble();
	 	t = in.nextDouble();
	 	p1 = in.nextDouble();
        if(v1 == v2){
               if(s / v2<=t){
                    System.out.println("0");
                    return ; 
               } 
               else{ 
                    System.out.println("No Time"); 
                    return ; 
               } 
        } 
        double T = (s - t * v2) / (v1 - v2); 
        if( s / v2 <= t){ System.out.println("0"); } 
        else if( v1 <= v2 ) { 
                if( v2 * t < s ){ System.out.println("No time"); } 
                else{ System.out.println("0"); } 
        } 
        else if(T <= t) { 
                p=(T * v1) * p1; 
                System.out.println(p); 
        } 
        else{ 
                System.out.println("No time"); 
        } 
     } 
 }