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ERROR IN PROBLEM 660-D
By thinkcentre_ns, history, 9 years ago, In English

Hey there!

I wanted to ask that in the problem: 660D - Number of Parallelograms , Shouldn't the answer for the below test-case be zero (but my A.C code gives one) ?

TEST-CASE:
4
0 0
0 20
0 5
0 15

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9 years ago, # |
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It is guaranteed in the problem statement that no three of the given points lie on the same line, and the test case you made violates that condition.

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