Hi codeforces are there any tutorials or codes for this gym
http://codeforces.net/gym/100030
and if not can someone tell me how to solve ( A , F , I ) or one of them at least
thank you very much. sorry for my poor English.
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Hi codeforces are there any tutorials or codes for this gym
http://codeforces.net/gym/100030
and if not can someone tell me how to solve ( A , F , I ) or one of them at least
thank you very much. sorry for my poor English.
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Any permutation can be represented as a product of independent cycles. The minimum number k needed to return cards to their start order is equal to Least Common Multiply of these cycles. So you need to factorize k = p1a1p2a2... and check whether sum p1a1 + p2a2 + ... is greater than 105. If it is greater, then there is no solution, else answer is a permutation with lengths of cycles equal to p1a1, p2a2, ...
thank you that's really helpful
Let's make a graph, words in dictionary are the vertices, and if two words differs only in one letter, then there is an edge between them. To construct such a graph, put all words in map or trie and then for each word try to change letter at each position to all other possible 25 letters; if such a word exists in dictionary, then make an edge between this words. Now you need to run BFS from first word to last word.
is there in different if I put the word in map or trie because my solution just like this and I'm getting TLE on test 51 can you provide your code plz
37029640 I used trie
slides 19-21
thanks but it's really doesn't make sense I read about "minimum vertex cover" a lot but I'm still getting WA plz if you solved the problem show me your smart code :D
Maybe you forgot to check if n = 1 then answer is 1?