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既然是upper-left corner is (x1, y1) and lower-right corner is (x2, y2)，那位什么会1 <= y1 <= y2 <= n？

Posted by IDcard at 2012-01-11 19:13:34 on Problem 2155

RT

Followed by:

Re:既然是upper-left corner is (x1, y1) and lower-right corner is (x2, y2)，那位什么会1 <= y1 <= y2 <= n？ (6) firstdeep 2016-08-22 20:59:39
- Re:既然是upper-left corner is (x1, y1) and lower-right corner is (x2, y2)，那位什么会1 <= y1 <= y2 <= n？ (24) firstdeep 2016-08-22 21:00:27
Re:既然是upper-left corner is (x1, y1) and lower-right corner is (x2, y2)，那位什么会1 <= y1 <= y2 <= n？ (42) pf_d 2021-12-02 20:49:12

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