suppose living cat a b there n nap spot cat usually sleepyour cat like sleep like spot change nap spot hour cyclically Cat a change nap place order n n 1 n 2 dot 3 2 1 n n 1 dot in word hour spot n go decrease order cyclically Cat B change nap place order 1 2 3 dot n 1 n 1 2 dot in word hour spot 1 go increase order cyclically the cat b young strict hierarchy A b do not lie in word catsd like spot x a take place b move place order x n x 1 x n 1 Cat B follow order will not return skip spot x a free spot x 2 oncalculate cat B hour k