Macro that fills entire table row based on first row value and another cell

Hi all

Whoever solves me this, saves my life:D

I think it's a simple macro, but i just can't find the right way to do it.
All i got is a simple macro that fills the row, but since the table is supposed to have 365 columns, i need something that loops or so. (I hate the fact that my background isn't programming, for i think i would do this in a sec).

I want to make a table row fill with "P" depending on the first row value and the cell above the table.
(easier when looking at the example)

help macro.png

I'll attach the file aswell

Thank you!