摘要：
Time limit: 3.000 seconds限时：3.000秒Background背景Computer generated and assisted proofs and verification occupy a small niche in the realm of Computer Science. The first proof of the four-color problem w... 阅读全文
摘要：
Time limit: 3.000 seconds限时：3.000秒The Problem问题This problem involves determining, for a group of gift-giving friends, how much more each person gives than they receive (and vice versa for those that v... 阅读全文