After playing this exciting game, you will find out that working on the railroad is not as easy as it seems at first glance. Your task is to plan the work of trains on different branches in such a way that they all make a circle and do not collide with each other. To do this, you need to conduct the most accurate calculation. Each train should be launched strictly at a certain point in time. Just one second plays a huge role here. A late or early start will inevitably lead to an emergency. And you have absolutely nothing to do with it. Be able to organize the work of the railway and pass all the tests.