这个是我的作业报告，写的是UVA167题目的位运算方法，效率很高，这种N皇后的方法用到USACO上面，提交也很高效，朋友测试了一下，0.3秒-This is my job report, written by subject-bit computing is UVA167 method, very efficient, this method uses USACO N Queen above, the author Ye is efficient, friends, test it, 0.3 s

usaco Prime Cryptarithm 答案-usaco Prime Cryptarithm answer