I saw a problem,which is 1004F.
I didn't know how to do it.
Despite giving it my all,I couldn't overcome.
Then I pressed the 'tutorial' button and found:
1004F — Sonya and Bitwise OR Will be added soon.
I was shocked and didn't know how to do.
Can anyone teach me this problem or give me a link which is tutorial in 1004F?
thanks.
My English is not so good but I try my best.