Santa Claus has dropped the present at Christmas that day!?

Since Santa Claus moves automatically to a present, I will collect presents and will aim at a high score! Touch the obstacle which falls from the sky and protect Santa Claus! If a score comes out, I will carry out ranking registration and will murmur by Twitter.

[Rule]
- If an "obstacle" asks Santa Claus, a durable value will decrease.
- Let's compete for a point when a durable value is set to 0.
- Correspond to a ranking function.