Probably requirements did not before contain data about the possible values of h, m, s. Now they are.

I'm glad I had the exact same solution :)
Notice that you don't need the second paranthesis around the timespan instantiation

While using a stack for this is clever it's actually bad practice because it increases the space complexity of the function. A simple integer getting incremented or decremented is enough for this problem, no need for stack.

Thank you!

Maybe I don't understand requirements but it should throw exceptio if h,m,s did not pass condition.

Your resolution is great but in requirements it's written that h, m, s should be bigger/smaller than some nr.

In your case if h,m,s i -1 test will not pass.

Really smart, I would say even cool.

Lmao

Best use if .net class TimeSpan is known.

XD

i love that one linebreak. because the line would be too long otherwise