nk name (we don't care about the name itself, and assume it will not collide with anything else in the file system).</p>
<div>After that follow n lines describing the directories (other than the root directory) that exist in the file system. The i-th of those lines describes the directory number i and consists of two integers: Pi and Li. They specify that the directory number i has a name of length Li and its parent directory (i.e. the directory in which the i-th directory is directly contained) has number