HackerLand University has the following grading policy:
- Every student receives a in the inclusive range from to .
- Any less than is a failing grade.
Sam is a professor at the university and likes to round each student's according to these rules:
- If the difference between the and the next multiple of is less than , round up to the next multiple of .
- If the value of is less than , no rounding occurs as the result will still be a failing grade.
