Sorry for asking here, since I can't find the information on usaco website.
Specifically, it's for this problem (http://www.usaco.org/index.php?page=viewproblem2&cpid=194#). My submission got accepted on usaco judge (https://ideone.com/dRl8T2) but fails on the following test cases
1 2
()
Correct: 1
Mine: 0
1 6
()(())
Correct: 4
Mine: 2
In general, my code should've failed on test cases where there exist concurrently balanced brackets starting at index 0.
You could email Brian Dean or someone, but I doubt they will do anything about it. Another problem has weak test data (USACO Gold Talent Show), usaco.guide has an explanation of a solution that is wrong but somehow passes.
Thanks, I will try that.
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