Run id: 94861

------Input------

30 20
0 1 1 0 0 0 0 1 0 1 0 0 1 1 0 1 1 1 0 1 
0 0 0 0 1 0 1 0 1 1 0 1 1 0 1 1 0 1 0 0 
0 0 0 0 0 0 0 1 0 1 1 0 1 1 1 1 1 1 1 1 
0 0 0 0 1 1 0 1 1 0 0 1 0 1 0 0 0 1 1 1 
0 1 1 1 1 0 1 0 1 1 0 1 1 0 0 0 1 0 0 0 
0 0 1 0 1 1 1 0 1 1 1 0 1 0 1 0 1 0 1 1 
0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 1 0 0 0 
1 1 0 0 0 1 1 1 1 0 0 0 1 0 0 0 0 1 1 0 
0 1 1 1 1 0 0 0 0 1 1 1 1 0 1 0 1 1 0 0 
1 1 1 1 0 1 0 1 1 1 0 1 1 0 1 1 1 1 1 1 
1 1 1 0 0 1 0 0 0 0 1 0 1 0 0 0 1 1 1 1 
1 0 0 0 1 0 0 1 1 0 1 1 1 1 1 1 0 1 1 0 
0 
------Answer-----

48.17

------Your output-----

-nan