Beyond the Void / 图论
有向图强连通分量的Tarjan算法
NOI 1997 解题报告
POI 2001 Wandering flea trainers 跳舞蝇的教练
有向树与树的括号序列最小表示法
POI 1998 追赶 Chase
USACO MAR07 Silver Cow Traffic 奶牛交通
USACO NOV07 Silver Cow Hurdles 奶牛跨栏
USACO DEC07 Silver Building Roads 建造路径
USACO JAN08 Silver Telephone Lines 架设电话线
USACO JAN08 Silver Cow Contest 奶牛的比赛
USACO 4.3.3 Buy Street Race 街道赛跑 race3