最小费用最大流 供在学生学习使用，信息学竞赛资料-Minimum cost maximum flow for use in student learning, information science contest

37signals成功经验，讲求精简时间缩小团队，以一切最小的能量创造财富和最大的能量。是一本好书。-The 37signals successful experience, emphasis on streamlining the time to narrow the team to create wealth in all minimum energy and maximum energy. It is a good book.

Dichotomy Methods Successive dichotomy uses a totally different approach to the problem of indexing. The constants A to F in the equation Q = A h2 + B k2 + C l2 + D kl + E hl + F hk are assigned minimum and maximum values so that for a gi