Hi
I noticed that there are a large number of people who go the small
input correct for prob C but not the large input. I was wondering why
that might be. I am one of those people. I think I applied Dynamic
Programming, and it worked on the small input, but not the large
input. I still can't figure it out. Does anyone know why a lot of
people are in the same lot? Basically, I think I am counting the
number of ways so far of being in one of the 18 states, of having
observed 'w', 'we', 'wel' etc. And then I write out the number of
ways  of being in the 18th state at the end. Why do I fail on large
values? I also mod everytime I add numbers.

What is going on? Did you fail on large input too? Did you figure out
why?

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