Your Game
The LKS Championship in "My Game" has been incredibly successful for me. I've won three qualifying rounds and advanced to the super final, where my opponents are my teacher and my best friend. After a fierce competition, we enter the final round with the following scores: my teacher has x points, my friend has y points, and I have z points.
The rules for the final round are as follows: At the start of the round, each player places a bet. A player can bet any positive number of points, as long as it does not exceed their current score. After the bets are placed, each player answers a single question. If a player answers correctly, their score increases by the amount of their bet; if they answer incorrectly, their score decreases by the same amount. The winner is the player who ends up with strictly more points than the others.
Is it possible for any of us to place a bet that guarantees a win, regardless of how the others perform?
Input
The first line contains the positive integers x, y, and z, each not exceeding 900.
Output
Output Teacher if my teacher can guarantee a win, regardless of the others' answers. Output Friend if my friend can do this, and :), if I can do it. If none of us can guarantee a win, output Nobody.