Hello guys. I have struggle with IOI 2016 problem B. How it can be solved for 100 points. Please in explanation clarify why we did that step?
I have interesting problem from WCIP3G. I thought that is DP.
And in my DP I have 2 states.
dp[i][j] = answer for subsequence from i to j.
Transitions obviously will be dp[i + 1][j] and dp[i][j - 1].
But how it can be written?
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