#include <iostream>
#include<iomanip>
using namespace std;
//Amaneet Sidhu--- This program is to calculate the speed of an interger value 
//read in by the user and calcualte the speed by dvidint the read in value by the constant values
int main() 
{
  
  //user menu choice of 1 2 or 3
    int in;
    cin >> in;
    //print menu
    cout << "Select the medium that sound is traveling through:"<< endl;
    cout << "1 Air"<< endl;
    cout << "2 Water"<< endl;
    cout << "3 Steel"<< endl;
    //distance read in
    double distance;
    cin >> distance;
    // values for the mediums
    int air = 1100;
    int water = 4900;
    int steal = 16400;
    
    //check to see if user input is valid
    if(in < 1 || in > 3) {
      cout << "The menu value is invalid. Please run the program again."<< endl;
      exit(0);
    }
    
    if(in == 1){
      //cout << "Air"<< endl;
      cout << "Enter distance (in feet)" << endl;}
    
    if( in == 2){
      //cout << "Water"<< endl;
      cout << "Enter distance (in feet)" << endl;}
      
   if(in == 3){
     // cout << "Steel"<< endl;
      cout << "Enter distance (in feet)" << endl;}
      


    
// checks to see if user input for distance is valid
    if(distance <= 0){
      cout << "The distance must be greater than zero"<< endl;
      exit(0);
    }
   //if Distanc is valid then it will calcuate the speed
    if(in == 1 && distance >= 0) {
      cout << "Air: "<< distance <<setprecision(4)<< " ft"<< endl;
      cout.setf(ios::fixed); 
      cout <<"Traveled for "<<setprecision(3)<< distance/air << " seconds"<<endl ;
      }
    
    if(in == 2 && distance >= 0) {
      cout << "Water: "<< distance <<setprecision(4)<< " ft"<< endl;
       cout.setf(ios::fixed); 
      cout <<"Traveled for "<<setprecision(3)<< distance/water << " seconds"<<endl ;}
      
    if(in == 3 && distance >= 0) {
      cout << "Steel: "<< distance<<setprecision(3) << " ft"<< endl;
       cout.setf(ios::fixed); 
      cout <<"Traveled for "<<setprecision(4)<< distance/steal << " seconds"<<endl ;}
    
  
      
    
   
    return 0;
}