Opening your session in 90 seconds...
Please note that we are starting a new machine for you, which takes more time.
If your browser keeps redirecting back and forth from this page in an endless loop, it is possible that you are using an older browser. Please update Google Chrome or use Mozilla Firefox.
Check our forum for the latest updates.
def count_bits (x):
num_bits = 0
num_bits += x & 1
x >>= 1
There is a lot you can do without signing in.
To take full advantage of our site, we recommend that you sign in.
Each user starts with 1,000 free credits.
© 2019 Elaine Chan