Statement

The final of the Olympiads in Teams is finally here and William wants to celebrate this special occasion organizing a circus show! He does not have any experience in the sector though, thus he decided to contact experts from the Organizing Improvised Shows circus company. When Giorgio heard about the plan, he immediately started doubting the qualities of this group as they seem a bit… unorganized. The main exhibition of the proposed show, which is also the most dangerous one, involves a cannon man who is repeatedly thrown by a series of cannons until he reaches the final destination. The group plans to have N cannons arranged in a line and start with the cannon man ready to be thrown by cannon 0; the final goal for him is to reach the last cannon N-1. Every cannon points to another cannon (potentially to itself) such that when the cannon man reaches the cannon i he is immediately thrown to the cannon T_i...