Hi,
I have solved over 200 questions on leet code in 3-4 months(Like 100 easy, 100 medium, 10+ hard). All in a good mix. Like 30 questions arrays, Strings, trees, Dynamic programming and so on.

**Yet i struggle, when Presented a medium and hard problem. Most importantly the dynamic programming problems.
**
I try to work out . And if I don't get a solution in 30 mins, i just give up and look at the solution. Of course, I am able to understand the solution thoroughly in another 20-40 mins.

My question is, Am i the only one who faces this issue ?
I am thinking of attending interviews in a month. Should i be worried about my progress ?

Any tip(s) ?
Thanks.