Write it, run it, read the output

This is a scratch drill — your code runs, nothing is graded or recorded. No test cases, no expected output, no verdict.

TASK

Use the fixed storage [4, 2, 7, 1, _] with n = 4 to insert 9 at 1-based position x = 3. Shift elements backward from the occupied end, then print the final array and updated n.

[4, 2, 9, 7, 1]
n = 5