a※b=n
(a+1)※b=n+1
a※(b+1)=n-2
1※1=2
2※1=3
3※1=4.....2008※1=2009
2008※2=2009-2=2007
2008※3=2007-2=2005......2008※2008=2009-2x 2007=-2005
a※b=n
(a+1)※b=n+1
a※(b+1)=n-2
1※1=2
2※1=3
3※1=4.....2008※1=2009
2008※2=2009-2=2007
2008※3=2007-2=2005......2008※2008=2009-2x 2007=-2005