摘要：
D. Long Pathtime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputOne day, little Vasya found himself in a maze consisting of(n + 1)rooms, numbered from1to(n + 1). Initially, Vasya is at the first room and to get out of the maze, he needs to get to the( 阅读全文
