USACO 草鉴定Grass Cownoisseur
In an effort to better manage the grazing patterns of his cows, Farmer John has installed one-way <READ MORE>
缩点
BZOJ1924 | SDOI2010 所驼门王的宝藏
在宽广的非洲荒漠中，生活着一群勤劳勇敢的羊驼家族。被族人恭称为“先知”的Alpaca L. <READ MORE>
In an effort to better manage the grazing patterns of his cows, Farmer John has installed one-way <READ MORE>
在宽广的非洲荒漠中，生活着一群勤劳勇敢的羊驼家族。被族人恭称为“先知”的Alpaca L. <READ MORE>