D - 最短路径·一 HihoCoder - 1081 描述万圣节的早上，小Hi和小Ho在经历了一个小时的争论后，终于决定了如何度过这样有意义的...

B - 还是畅通工程 HDU-1233 某省调查乡村交通状况，得到的统计表中列出了任意两村庄间的距离。省政府“畅通工程”的目标是使全省任何两个村...

A - How Many Tables HDU-1213 Today is Ignatius' birthday. He invites a l...

F - Bomb HDU - 3555 The counter-terrorists found a time bomb in the dust...

D - The least round way Codeforces Beta Round #2 There is a square matri...

B - 不要62 HDU - 2089 杭州人称那些傻乎乎粘嗒嗒的人为62（音：laoer）。杭州交通管理局经常会扩充一些的士车牌照，新近出来一...

A - Football POJ-3071 Consider a single-elimination football tournament ...

I - Inversion HDU-6098 Give an array A, the index starts from 1.Now we w...

H - Rikka with Competition HDU - 6095 As we know, Rikka is poor at math....