ANDROUND  AND Rounds
You are given a cyclic array A having N numbers. In an AND round, each element of the array A is replaced by the bitwise AND of itself, the previous element, and the next element in the array. All operations take place simultaneously. Can you calculate A after K such AND rounds ?
Input
The first line contains the number of test cases T (T <= 50).
There follow 2T lines, 2 per test case. The first line contains two space seperated integers N (3 <= N <= 20000) and K (1 <= K <= 1000000000). The next line contains N space seperated integers Ai (0 <= Ai <= 1000000000), which are the initial values of the elements in array A.
Output
Output T lines, one per test case. For each test case, output a space seperated list of N integers, specifying the contents of array A after K AND rounds.
Example
Sample Input: 2 3 1 1 2 3 5 100 1 11 111 1111 11111 Sample Output: 0 0 0 1 1 1 1 1
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robosapien:
20200721 23:45:16
good question for beginners. It's not tough if you think for a while :) 

worrywart_ind:
20200613 19:54:16
comments are really depressing for beginners


fahimcp495:
20200602 22:54:58
The value of N is not greater than 20000. when you solve it using segment tree, you should set the size of tree 4*N not 3*N. because the size of segment tree = 2^ceil(log2(20000))+1 = 65536 = 3.2768 * N ~= 4*N 

ham163:
20200523 17:41:06
solved with O(n*32) complexity Last edit: 20200523 17:46:56 

prashant05:
20200409 11:23:49
very easy AC in one go!! 

kbhartiya83:
20200403 08:00:22
NAAN Last edit: 20200403 08:54:07 

x4fectax:
20200109 17:15:44
oh my god ez problem ac forst got lmao so ez i am vry good tehc O(nlognlognlognlognlognlognlognlognlognlognlognlognlognlognlognlognlognlognlognlognlognlognlognlognlognlognlognlognlognlogn)


hoangkimduc:
20191101 09:54:42
AC on second go. Yeahezzz 

cyber_psych0:
20190824 09:54:43
Hurray!! AC in one go :) 

nik6:
20190801 10:21:07
Last edit: 20190801 10:30:44 
Added by:  Varun Jalan 
Date:  20100111 
Time limit:  1s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: NODEJS OBJC PERL6 SQLITE VB.NET 
Resource:  Own Problem, used for Codechef Snackdown http://www.codechef.com/ 