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SMO 2016 Open Round 1 Question 6

SMO · SMO 2016 Open Round 1

Question 6

In this paper, let $[x]$ denote the greatest integer not exceeding x. For examples, $[5]=5$, $[2.8]=2$, and $[-2.3]=-3$.

Let m be the number of those triangles whose longest side is 2016 and the other two sides are also of integral length. Determine $[m/1000]$.

(Note: Two congruent triangles are considered to be the same triangle.)