300g cooking oil (Google says rapeseed oil is popular in Poland so I used that): ~2652 Calories
250g chocolate: ~1338 Calories
Total: 24,397 Calories or ~813 Calories per day
Some other people online also did the math and came up with similar numbers. For example: https://news.ycombinator.com/item?id=37027027 came up with 33,063 Calories (including the sugar)
Ballpark estimate, excluding the sugar:
2.5kg beef: ~6265 Calories
0.5l vodka: ~1082 Calories
1.3kg white rice: ~4743 Calories
1.3kg flour: ~4732 Calories
500g butter: ~3585 Calories
300g cooking oil (Google says rapeseed oil is popular in Poland so I used that): ~2652 Calories
250g chocolate: ~1338 Calories
Total: 24,397 Calories or ~813 Calories per day
Some other people online also did the math and came up with similar numbers. For example: https://news.ycombinator.com/item?id=37027027 came up with 33,063 Calories (including the sugar)