@Swathi : Suppose u read 3 rows. Find the minimum and maximum element from the elements read from 3 rows. 2 cases arise: 1. Min and Max element belong to 1 row 2. Min and Max belong to 2 rows In both the cases we can get the row which do not contain minnimum and maximum element from the 3 rows read. If that row does not contain minimum and maximum element from 3 rows, it won't contain maximum and minimum element from N rows
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