How can I be good at X-OR problems?

ashik_01 · August 6, 2019, 2:00pm

I have always been facing problems in solving X-OR problems. Can anyone please guide me in this regard,so that i can be good at it.Thanks in advance.

l_returns · August 6, 2019, 2:05pm

By practicing and checking resources and properties of Xor.

ashik_01 · August 6, 2019, 2:23pm

Is there any good resources and problem list brother?

saurabhshadow · August 6, 2019, 2:41pm

This should help—> All about XOR

l_returns · August 6, 2019, 4:01pm

Don’t have any list of problems. You can google for resources.

anon55659401 · August 6, 2019, 4:05pm

Thanks for the valuable tips

hchauhan7816 · August 6, 2019, 5:05pm

Please Provide some good Practicing content regarding X-OR

aryanc403 · August 6, 2019, 7:41pm

This is one of my favourite problem tags.
Most important property of XOR a \oplus b \oplus a = b.
What I love most is \oplus acts as both addition and subtraction.

Few starting problems I recommend -
Basic Div2 A,B questions using a \oplus b \oplus a = b.
Greedy with(out) the use of trie.
[Rare] Xor based Gauss elimination and some basis related questions.

For Div2 A,B use can search codeforces. I don’t remember any question. But there are many nice problems. Definitely recommended for beginners.

Then two of my favourite problems -

You can find relatively easier problems then these in recent contests.

ashik_01 · August 7, 2019, 2:24am

Thank you brother for your help.

aryanc403 · August 7, 2019, 9:11am

Feel lucky A Beautiful Technique for Some XOR Related Problems - Codeforces someone posted it yesterday.
Just see references.
Imo always google before asking anything. Asking on discuss will be answered by people who are active rn. There are a lot of blogs over there.