Imagine a "grid" of people: some number of people arranged in a number of rows and columns in a rectangular formation.
We designate person A as the shortest person in the group of the tallest people of each row. We then designate person B as the tallest person in the group of shortest people in each column.
Who is taller, A or B?
(In reply to re: Coordinate System
Yes, the can be in the same row or same column. They can even be the same person. Consider if they are lined up exactly by height: in an N x M grid, (R1, C1) is the shortest; (RM, CN) is the tallest; (R(m + 1),CN) is taller than (Rm,Cn); (R1,C(n + 1)) is taller than (RM,Cn).
The tallest person in each row m is (Rm,CN) and the shortest of these is (R1,CN); The shortest person in each column n is (R1,Cn) and the tallest of these is (R1,CN). So A = B = (R1,CN)
Posted by TomM
on 2002-07-09 02:40:03