20
16
1111000000001111
1111000000001111
1111000000001111
1111000000001111
1111000000001111
1111000000001111
1111000000001111
1111000000001111
1111111111111111
1111111111111111
1111111111111111
1111111111111111
1111000000001111
1111000000001111
1111000000001111
1111000000001111
1111000000001111
1111000000001111
1111000000001111
1111000000001111
