2008
USACO JAN08 Silver Telephone Lines 架设电话线
USACO JAN08 Silver Cow Contest 奶牛的比赛
USACO JAN08 Bronze Costume Party 化装晚会
USACO FEB08 Silver Eating Together 麻烦的聚餐
USACO FEB08 Silver Meteor Shower 流星雨
USACO FEB08 Silver Game of Lines 连线游戏
USACO FEB08 Bronze Dining Cows 晚餐队列安排
USACO MAR08 Gold Cow Jogging 牛跑步
USACO MAR08 Gold Pearl Pairing 珍珠分对
USACO MAR08 Silver River Crossing 奶牛渡河问题
USACO MAR08 Silver Cow Travelling 游荡的奶牛
各种字符串Hash函数比较