Once upon a time, there was Peter, a freelance programmer. One day he heard about the cryptocurrency "Dogecoin" and decided that this was his chance to get rich. With his last savings and credit card, he bought a bunch of these "Dogecoins". At first, the price of "Dogecoin" soared to the heavens! Peter started bragging to all his friends, bought himself a cool gaming computer, and even ordered a pizza with pineapples (which is already a comedy in itself). But, as we know, cryptocurrency is an unpredictable thing. One fine day, the price of "Dogecoin" plummeted as swiftly as it had risen. Peter was left with nothing but a mountain of pizza with pineapples. But that's not all! It turned out that Peter's ex-wife, Olga, was also interested in cryptocurrency. Being more cautious, she invested in "Catcoin," which, on the contrary, increased in price. In the end, Olga bought herself a new apartment, a car, and even a corgi dog, while Peter sat in his rented apartment, eating cold pizza with pineapples and watching his ex-wife drive around in her new car with the corgi. The moral of the story: not every day is a feast for the cat, and not all "Dogecoins" are equally useful.