摘要:
Alice and Bob begin their day with a quick game. They first choose a starting number X0 ≥ 3 and try to reach one million by the process described belo 阅读全文
摘要:
http://codeforces.com/contest/948/problem/C C. Producing Snow Alice likes snow a lot! Unfortunately, this year's winter is already over, and she can't 阅读全文
摘要:
http://codeforces.com/contest/948/problem/A A. Protect Sheep Bob is a farmer. He has a large pasture with many sheep. Recently, he has lost some of th 阅读全文