Changing the value in the Seed field will generate the corresponding input to the Input field.
By setting the M, K fields to values which meet the constraints of the input, you can change the input to the specified M, K values.
Pressing the Download button will download the inputs for seed values seed, seed+1, ..., seed+#cases-1 at once.

By running your program locally against the generated input and pasting the output of your program into the Output field, the visualization results will be displayed.
Pressing the ▶ button starts animation.
By pressing the Save as PNG or Save as Animation GIF button, you can download the visualization results.

You can quickly switch between multiple outputs by pressing the Select File button at the top and selecting the directory containing the output files.
By naming the output file 1234.txt or abcd_1234.txt, the seed number (in this case 1234) is automatically set when the file is selected.

The red circles represent the presence of a house in the area, while the blue circles represent the presence of a workplace in the area.

When the checkbox for enable interactivity is checked, hovering over an area will display information about that area in a tooltip, and if there is a house or workplace in that area, the area where the other house or workplace exists will be displayed with a thick border.
It is recommended to uncheck the option during animation display, as it may lead to decreased performance.