<human>: Following a very rainy season, the whole central plain of Thailand has been submerged by one of the biggest flooding of the last 50 years. Slowly, that water is creeping towards Bangkok on its way to the sea.

The authorities are attempting to do some damage control, but many (including myself) aren't impressed by their handling of the crisis and while it seems central Bangkok will pay a little price compared to upcountry, I believe it is better if I'm a bit prepared.

So. The hypothesis is: Bangkok is flooded by 50cm to 1m of water. I'm lucky to live in a high rise so none of my belongings will be damaged. However, I might not have electricity or water for a while.

What should I have with me? how much fresh water/food is needed per day to "survive"? Should I start to prepare a "zombie apocalypse" kind of pack?

Give me the gist of the text in a nutshell
<bot>: I might be stuck in my appartment for a few days, maybe without electricity or water. How can I prepare myself?