摘要：
Our chemical biologists have invented a new very useful form of life called stripies (in fact, they were first called in Russian polosatiki, but the s 阅读全文
摘要：
一个规则的实心十二面体，它的 20个顶点标出世界著名的20个城市，你从一个城市出发经过每个城市刚好一次后回到出发的城市。 Input 前20行的第i行有3个数,表示与第i个城市相邻的3个城市.第20行以后每行有1个数m,m=1.m=0退出. Output 输出从第m个城市出发经过每个城市1次又回到m 阅读全文