text: #include <bits/stdc++.h>
  using namespace std;
  
  
  void solving(){
      double pi = 3.14159;
      double rad;
      double formula = 4/3.0;
      double volume = 0;
      cin>>rad;
  
      volume = formula * pi * pow(rad,3);
      cout<<fixed;
      cout.precision(3);
      cout<<"VOLUME = "<< volume<<endl;
  }
  
  int main()
  {
      solving();
  }