COMPILER - Editorial



Mine is here -


combination of statements

char* a[500];
// ...

is strange isn’t it?


i used to work on Turbo c++ and it used to work on it.
and also i am new to codeshef.
But Yes It seems strange,,
its working now but ,
time limit exceed,
but i m trying to develop better logic.


You was kind of lucky, your code is not working on ideone I had to change

Scanner s = new Scanner(;
String str = s.nextLine();


//Scanner s = new Scanner(;
String str = rea.nextLine();

and the code returns 0 4 0 for input from problem statement , can you fork it and fix it on ideone?


Your code is not working on ideone, can you fix it? I used your last submission in practice…


try this test case <<>.The answer should be 0 , but ur code gives 2.


why so coz <<> last two brackets are matching which is the case with the official test case of <>>> which gives 2 as output.
plz clarify it :frowning:


you should output the length of the longest prefix


thanku got it :stuck_out_tongue:


ad hoc means something that is not known in advance


ANswer for ><<>> should be 0


Why so ?? I can see that I have valid string of length 4 here


Read the problem statement carefully it has asked for length of longest valid ‘prefix’ , so the expression must start with ‘<’. Hope it helps!


They have asked “Prefix”. Read question again. Even first ‘>’ gives answer 0 as there is no valid prefix. There is no need to check further.

is my code, please let me know where’s the mistake.
I tried various test cases and they display correct output. I used pair parentheses algorithm to solve it and have then multiplied the count object by 2 to get the output.