#include <cmath>
#include <iomanip>
#include <iostream>
#include <string>
#include <experimental/random>
 
using std::experimental::randint;
 
int main()
{
  // read two numbers specified with 2 decimal places
  std::string a, b;
  if (!(std::cin >> a >> b))
    std::exit(EXIT_FAILURE);
 
  // "1.23" -> Int(123)
  auto two_places = [](std::string s) -> long long {
    s += "00"; // pad with zeros for 1. -> 100 case
    auto i = s.find('.');
    if (i != std::string::npos) { // found decimal point
      s = s.substr(0, i) + s.substr(i+1, 2); // drop decimal point
    }
    return std::stoll(s);
  };
  long long  r = randint(two_places(a), two_places(b));
  unsigned long long ur = std::abs(r);
  std::cout << (r < 0 ? "-" : "") << (ur / 100) << '.' 
            << std::setfill('0') <<  std::setw(2) << (ur % 100);
}

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