Koala and Lights
It is a holiday season, and Koala is decorating his house with cool lights! He owns $n$ lights, all of which flash periodically. After taking […]
Koala
Koala and Notebook
Koala Land consists of $m$ bidirectional roads connecting $n$ cities. The roads are numbered from $1$ to $m$ by order in input. It is guaranteed, […]
