Mostly I have learned a lot, but I hit a wall in a practice program. I run my program, and the Slolearn app runs 5 cases each with a different input. For the first 2 cases my program gives the correct output. I can see the number Sololearn used as input, I can see my output, and I can see the expected output. For cases 3, 4, and 5 my program does not give the correct output. However, these cases (3-5) are locked. I can't see the number Sololearn used as input. I can't see my output or the expect