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Help needed in a question. (Right Triangles)
By Hizenberg, history, 13 months ago, In English

https://mirror.codeforces.com/problemset/problem/52/B

Can somebody explain me this question? I am not getting its problem statement.

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13 months ago, # |
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Well, I am glad to share my insights with you. The problem asks us to count the number of "Right Triangles"(you must know what the "RT" is), the Picture is described by '.' '*', we need to count the triangles consisted of '*'. The first Example is , the ans equals the number of '*'(note that one '*' can make a triangle itself); And the example below has the two triangles consisted of 3 '*' extra. (ignore my pool English)

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