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# AVGPR last subtask is failing :/

 0 My last subtask is failing in Java but the same approach is working completely fine in python. Help me in finding out the mistake please! https://www.codechef.com/viewsolution/18320014 asked 20 Apr '18, 02:22 3★kunal12 44●5 accept rate: 0%

 1 It is due to overflow. Use appropriate data type. e.g. test case - 1 100000 1 1 1 1 1 ...... Your code gives 704982704 instead of 4999950000. Your approach is working fine in python because python does not allow overflow. answered 20 Apr '18, 02:39 2.7k●1●6●18 accept rate: 10% 1 Correction :p Python does not allow overflow till $\approx {10}^{7000}$. Been there, done that, hence the knowledge xD (20 Apr '18, 22:02) This upper limit I didn't knew. @vijju123 Thanks. (20 Apr '18, 22:14) I don't think that's correct @vijju123. The documentation clearly states "Integers have unlimited precision" (20 Apr '18, 23:07) meooow ♦6★ Yes, that 7000 limit holds for float data type I see. If you try to execute- a=(10.0)**7000 you will get an overflow error. And for some reason I feel float is the favorite data type of python xD. Yes, integers, I agree with you. Integers do have precision limited to your computer's hardware capacity :p (lets not throw unlimited here :p ). For codechef I think it will be time limit though, instead of memory one. The thing was, I see this is a general misconception in python where people try to store and manipulate numbers with as long as ${10}^{9}$ digits just because of "unlimited" (20 Apr '18, 23:42)
 0 @vijju123 which problem used that large value,link please answered 21 Apr '18, 00:11 2★des1997 20●3 accept rate: 0% https://www.codechef.com/problems/FCTRL2 But I will recommend doing this problem without using python/ BigInt java or any similar library file. (21 Apr '18, 00:31) https://www.codechef.com/LTIME49/problems/TWONMS/ - this one. If you try doing brute force with python, thinking that there is no limit, you get NZEC here. (21 Apr '18, 19:29) But @vijju123 this question cannot be passed using Brute force. And without Brute force. This question does not require big nos. (21 Apr '18, 19:56) I cant find the question link, but one user tried to do something on lines of $\frac{A*{2}^{(N+1)/2}}{B*2^{N/2}}$ and he got NZEC error. Just search this "twonm" on forum and you will see people using JAVA big integer library to solve it. I call that "Brute Force" since you are doing what the question said xD (21 Apr '18, 20:10) I tried doing brute force using python. I got 30 pts and TLE but did not got NZEC. https://www.codechef.com/viewsolution/18327886 (21 Apr '18, 20:44) 1 As long as we are working with integers no error is thrown e.g. writing (1000000)**1000 is working fine. Whereas writing (10.0)**1000 shows NZEC OverflowError: (34, 'Numerical result out of range') (21 Apr '18, 21:43) so twonm is most solved in june lunchtime and still interesting,nice:) (26 Apr '18, 22:43) des19972★ showing 5 of 7 show all
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question asked: 20 Apr '18, 02:22

question was seen: 438 times

last updated: 26 Apr '18, 22:43