Vodka: 231 kcal/100ml * 500ml = 1155 kcal
Meat: say 300 kcal/100g * 2.5kg = 7500 kcal
Butter: 717 kcal/100g * 500g = 3585 kcal
Cooking oil: 884 kcal/100g * say 300g = 2652 kcal
Sweets: say 387 kcal/100g * 250g = 967 kcal
Rice, uncooked: 364 kcal/100g * 1.3kg = 4732 kcal
Sugar: 387 kcal/100g * 2kg = 7740 kcal
Flour: 364 kcal/100g * 1.3kg = 4732 kcal
Total 1155+7500+3585+2652+967+4732+7740+4732 = 33063 kcal
That's 33063 kcal for a month, or 1086 kcal per day on average... how? Long-term, that's a starvation diet, and that's assuming you consume every gram of everything you get including the cooking oil, the vodka, and the unhealthy amount of sugar.
[edit] I see now that some products were not rationed, but still, this seems like a rather restrictive diet and indeed from the article:
>In mid-1981 thousands of Poles took part in several hunger demonstrations, organized in cities and towns across the country.
>Banners, held by the protesters, stated among others: “Our children are hungry”, “We stand in lines 24 hours a day”, “We want to split bread, not Poland”, “The hungry of all countries – unite!”, and “We are not going to work hungry”.