Even though i tried many times and even checked with the solutions, I’m getting wrong answer everytime. It’s working with simple test cases on codeblocks and ideone.

Here’s my code: http://ideone.com/FlTscZ

# Wrong answer in HelpingLira problem

**sandeshc13**#1

**adrenalin**#2

You need to sort the array which stores the areas. Then find the indices. You haven’t sorted them.

See here: http://www.codechef.com/viewsolution/2812458

**praneethiitr**#3

The problem is with the precision of floating numbers in your code.I have declared all your intermediate variables long double instead of double and changed the code to http://ideone.com/KCCsia. It got accepted.

You could have used the formula

2A = |x1(y2-y3)+x2(y3-y1)+x3(y1-y2)|

to calculate the area.This does not involve calculation of lengths of triangle and thus no chance for any precision errors.

**sambit1993**#4

First of all dont do floating point comparison with >= and <=. Use variable called EPS to do comparisons. (Read this post on quora: http://www.quora.com/Competitive-Programming/What-are-the-things-that-one-needs-to-take-care-of-while-dealing-with-floating-point-calculations-in-competitive-programming-questions) .The link to the corrected solution is: http://www.codechef.com/viewsolution/2838730. And secondly always try to avoid floating point comparisons , like it can be done in this case. Use the formula of area in terms of coordinates of point dont calculate the sides.

**praneethiitr**#6

sorting is not needed in the question as we have only to find the max and min values of area.