The answer is coming 0 instead of some positive value for some test cases Submission: https://codeforces.com/contest/1703/submission/164043486
The answer is coming 0 instead of some positive value for some test cases Submission: https://codeforces.com/contest/1703/submission/164043486
Typecast pow into long long .it might work.
when printing the answer it's not enough to take dp [ n ] [ i ] , you need to take dp [ j ] [ i ] over all n elements..
Thank you!!! This worked and also I get it why it is not enough to take dp[n][i] while calculating the final answer.
there is a case when you will not to buy a good key anymore then you will never have a negative values in the next moves , from buying the bad key you will still add to your answer either 0 or some value greater than 0 .. I hope this is clear