У вашего броузера проблема в совместимости с HTML5
I had written a simple program in Python to find number of relative prime numbers between 1 to one million, hovewer I was turned off by slow speed of the program - which was estimated on about 80 hours.
So I had rewritten the program in C++. Here you can see pretty much the same program in C++ (arguably even better, as no arrays are created), but C++ is still a bit slower to Python.
The result surprised me.