摘要：
Description描述Dominoes – game played with small, rectangular blocks of wood or other material, each identified by a number of dots, or pips, on its fac... 阅读全文
摘要：
Description描述His Royal Highness King of Berland Berl XV was a very wise man and had a very accomplished wife, who was aware of the fact, that prominen... 阅读全文
摘要：
Description描述Find coordinates of any triangle ABC if it is know that |AB|=c, |AC|=b, |AM|=m, AM is a median of triangle.找到任何一个三角形ABC，使得它满足|AB| = c，|AC... 阅读全文