How to guess whether code will run in given time or not or will run for specific input (such as large size array)?
Try learning about big O notation and time complexity. You canc heck geeksforgeeks for this. Roughly, judge executes ~K x 10^7 instructions a second. If N is upto 10^5, then a O(N^2) algorithm will fail as it needs atleast 10^5 x 10^5 = 10^10 instructions.
In the question Lazy Jem, I cant get outputs like 131351258112.I’m programming in C.Can anybody please teach me how to store large numbers in an array? Please help me.
https://www.codechef.com/viewsolution/15482446.This is my attempt at Discrepancies in the Voters List.I’m getting a TLE.Please help me!!.This is urgent.(for me)
You dont even need to sort. Just maintain a frequency array, and if any element is coming more than once (2 or 3 times) then include it in answer array. If you go sequentially you wont need to sort answer array as well.
Thank you. 
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I’m a beginner at java. I wanted to know how the nextLine() Method discards your current input? For example assume the following code:
{
Scanner input = new Scanner(System.in);
int a = input.nextInt();
input.next();
}
After the input.next() is executed, the value in “input” is discarded. I wanted to know how does it work?
pls help guys
You may want to refer to stackoverflow for this question.
i tried but cant get satisfactory ans. i hope will get a help from here
thanks anyway
link : https://stackoverflow.com/questions/24374730/how-does-nextline-discard-the-input
Its not exactly “discarded”. Its just that there is no variable which is accepting the value, so the scope of the value in “input.next()” ends.
nextLine method doesnt discard the input, it takes the entire line as input. In case again, theres no string to accept that, the input is wasted and it starts reading from next line.
can anyone please tell me whats wrong with my code?
problem: https://www.codechef.com/problems/FLOW007
my code: https://www.codechef.com/viewsolution/15871446
thx in advance.
Try this case-
Input- 90
Expected output = 9. If 09 printed, give WA.
Similarly Input=900000000 ,output=9. Leading 0 are not allowed.
can anyone please tell me whats wrong with my code?
problem : https://www.codechef.com/problems/PRB01
Please print “yes” and “no” isntead of “YES” and “NO”. Wrong case= Wrong Answer.
can anyone tell me what wrong in my codes?
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problem : https://www.codechef.com/problems/HEADBOB
CODE: https://www.codechef.com/viewsolution/15878756 -
(got 40 points) problem: https://www.codechef.com/problems/SMPAIR
CODE: https://www.codechef.com/viewsolution/15878167
In the score based ranking system(in Long Contests), whose name appears first in case of ties?? I know it doesnt matter as ranks are similar, just asking out of curiosity coz its neither alphabetical wise nor rating wise.