Need Help to solve a question

Revision en2, by saisurya027, 2017-09-20 08:41:41

Can someone help me to solve this 346B - Lucky Common Subsequence

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en2 English saisurya027 2017-09-20 08:41:41 27
en1 English saisurya027 2017-09-20 08:39:36 70 Initial revision (published)