For Problem D , why the solution is giving MLE when according to given constraint dp size is maximum 2*1e5*10 < 1e7. https://mirror.codeforces.com/contest/1992/submission/270048258
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see you have 2 states in your dp. Mainly N and K (swims in your case) both can be 2*10^5 so total in worst case is >10^9 Actually you could have taken m because m is less than 10 Anyways u dont need both k and m in and can just do in n space. Check my solution and let me know if u want me to explain
btw my dp finds min number of k needed to get past river and if thats more than k then u cant else can