Airport
blue : 500

The timing in this challenge is clearly not very realistic---but the methods you'll use here can be extended to real-world implementations of modular exponentiation. Server at 52.1.245.61 bostonkeyparty.net , port 1025. My solution takes a little while. Good luck.

http://bostonkeyparty.net/airport.py.c8830782c42d5a14ac2efffa22a4eed1