Tom will soon be competing in cycling. Today he went to a special Wheelie Bike training ground where he needs to practice. Your hero will practice riding the rear wheel of a bicycle. Sitting behind the wheel and starting to pedal, he will gain a certain speed. Having reached a special line, he will tear the wheel up, and the bicycle will stand on the rear wheel. Now you will need to drive a certain distance on it and prevent the front wheel from touching the ground. Try to keep your bike balanced.