[TestMethod1]
na=12
nb=4
nExpect=8
[TestMethod2]
na=7
nb=3
nExpect=4
[TestMethod3]
na=-1
nb=2147483647
nExpect=-2147483648
[TestMethod4]
na=-2
nb=2147483647
nExpect=-2147483649
[TestMethod5]
na=-1000
nb=2147483647
nExpect=-2147484647