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WILLITST - Will it ever stop |
When Bob was in library in University of Warsaw he saw on one of facades caption :"Will it ever stop?" and below some mysterious code:
while n > 1
if n mod 2 = 0 then
n:=n/2
else
n:=3*n+3
Help him finding it out !
Input
In first line one number n<=10^14.
Output
Print "TAK" if program will stop, otherwise print "NIE"
Example
Input: 4 Output: TAK
| Added by: | Krzysztof Lewko |
| Date: | 2011-11-09 |
| Time limit: | 0.906s |
| Source limit: | 50000B |
| Memory limit: | 1536MB |
| Cluster: | Cube (Intel G860) |
| Languages: | All except: ASM64 |
| Resource: | AMPPZ 2011 |
hide comments
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2018-12-14 18:41:12
Use mp boost library of c++ for input. AC in one go! |
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2018-12-14 12:32:43
if anywhere in loop if n is divisible by 3 ,print NIE and return |
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2018-11-23 15:00:58
This is such an interesting prob. All you need to do is to check out if n = 2^k, print TAK, else: NIE |
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2018-11-17 11:53:25
I am maintaining a set and checking whether the no has earlier occurred in set or not. In case a no repeats itself, I am breaking the loop for NIE. Still I am getting WA. Kindly help |
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2018-10-31 16:37:44
69th |
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2018-10-17 07:50:22
very Easy Problem AC in ONE GO spoiler - Just Think about Log2 |
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2018-10-09 14:46:58
Just run the loop and if at any point you find that n is divisible by 12, the loop will never terminate (12,6,3,12,6,3,..) pattern repeats. One other way is to check if the number is a power of 2, but I haven't tested this method. |
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2018-09-29 14:52:44
Only Check power of 2 or not |
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2018-09-28 15:02:28
Testing my FTH |
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2018-08-24 19:07:23
if anywhere in the loop n is becoming 3 then it will never terminate otherwise it will terminate automatically . make separate case for values <=1. AC in 5 lines |
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