题目描述中,原题上是"Help the bulls find the shortest path from their current pasture to the barn (which is located at pasture 1) and then onward to the pasture where their special cow is grazing."公牛送奶牛巧克力。可是翻译是“居住在农场P_i的奶牛A(1<=P_i<=N)，它想送一份新年礼物给居住在农场Q_i(1<=Q_i<=N)的奶牛B。”。背景是"Valentine's day"情人节,总不可能同性送礼物吧。或者说是改成了“新年礼物”的情景,但是说明/提示里面却是原意,“居住在农场P_i的公牛从FJ那里取得情人节巧克力后送给他居住在农场Q_i的梦中情牛至少需要走的距离。”公牛送“梦中情牛”，符合情人节。