obsorb_knowledge的博客

G. Petya's Examstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputPetya studies at university. The current academic year finishes with nn special day...

Dilworth is the world’s most prominent collector of Russian nested dolls: he literally has thousands of them! You know, the wooden hollow dolls of different sizes of which the smallest doll is contain...