What is the number in the 3rd test case palindrom in c++ language?

Question

Need a number. Have no pro version.
https://code.sololearn.com/cq9RYqSeB2J2/?ref=app

Answer 1

The whole point of the locked cases is to prevent hardcoding the solutions with a bunch of conditionals, which defies the point of developing a general algorithm. I don't think the Pro version makes the test cases visible either.

If you already have a solution, but trouble to get everything right, how about you paste your code into a playground project and link that here? We will gladly try to assist you and find out where your code might fail.