https://codeforces.com/contest/2254/problem/C1https://codeforces.com/contest/2254/problem/C1
so much for chatgpt go. any bhangi here who has gpt plus? i would want you to ask gpt to solve it without using web-search or looking at any editorial and derive the solution completely by its own intelligence. gemini was able to do it with pro extended reasoning but go cant do it.
>>98735
this is easy. the operation is swap a[i] with a[i+2]. for 111 and 000 the array is unchanged so we dont care. sorting can be done if swapping is allowed so count even and odd idexns. end
>>98741
you dont have to do operations literally. it is based on even/odd index parity and their count as 100 and 110 are different.
whenever you reverse them middle bit stays same which means if its index is even then it will always be even and same for odd. so based on this we can conclude whether it will form B string or not but this was incomplete. there was another invariant which was about counting how many odd and even 1s there will be. i havent read it yet. my head hurts because i didnt sleep in night and had to go to kalej like a donkey.
