Binary puzzle of April 21, 2015
1
0
1
0
0
1
0
1
0
0
1
0
0
1
1
1
0
0
0
0
1
1
1
0
0
0
1
1
1
0
0
1
0
0
0
0
1
1
0
0
1
1
0
1
1
0
0
1
1
0
1
1
0
0
1
0
0
1
1
1
0
1
0
1
0
1
0
0
1
0
1
0
0
1
0
0
1
1
0
1
0
1
0
0
1
0
1
1
0
0
1
1
0
1
1
1
0
1
0
1
0
0
1
0
1
0
0
1
0
0
1
0
1
1
0
1
1
0
1
0
1
0
1
0
1
0
1
0
0
1
1
0
0
1
0
1
0
1
1
0
1
0
0
1
1
0
1
0
1
0
0
1
1
0
0
1
1
0
1
0
0
1
0
1
0
1
1
0
0
1
0
1
1
0
1
0
0
1