Marinada '25

[lang=hr] Mali pesek Peki (koji ima četiri noge) na svakoj svojoj nozi ima patike, čarape i lak za nokte. Pesek Peki želi skloniti lak za nokte sa svojih noktiju. Peki ne može skinuti čarapu bez da je skinio patiku s noge i ne može skinuti lak bez da je skinuo čarapu s noge. Na koliko načina pesek Peki može skinuti lak sa sve četiri noge? [/lang] [lang=en] Little doggy Peki (who has four legs) is wearing sneakers, socks, and nail polish on each of his legs. Peki wants to remove the nail polish from his nails. Peki cannot take off a sock without first taking off the sneaker from that leg, and he cannot remove the nail polish without first taking off the sock from that leg. In how many ways can Peki remove the nail polish from all four legs? [/lang]