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Give a big-O estimate for the number of operations,
where an operation is a comparison or a multiplication,
used in this segment of an algorithm (ignoring comparisons
used to test the conditions in the for loops, where
a1, a2, ..., an are positive real numbers).
m := 0
for i := 1 to n
for j := i + 1 to n
m := max(aiaj, m)

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Give a big-O estimate for the number of operations,
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