2019年2月20日
数独求解问题（DFS+位运算优化）
摘要： In the game of Sudoku, you are given a large 9 × 9 grid divided into smaller 3 × 3 subgrids. For example,. 2 7 3 8 . . 1... 阅读全文
posted @ 2019-02-20 02:42 black_hole6 阅读(540) 评论(0) 推荐(0)
C - 思考使用差分简化区间操作
摘要： FJ's N (1 ≤ N ≤ 10,000) cows conveniently indexed 1..N are standing in a line. Each cow has a positive integer height (which is a bit ... 阅读全文
posted @ 2019-02-20 01:07 black_hole6 阅读(304) 评论(0) 推荐(0)