OSPF Network Statement

i have 3 routers R1,R2,R4 as in attechment,

i want to know that is the defferince between this command

#network 10.10.10.1 0.0.0.0 area 0
#network 10.10.20.1 0.0.0.0 area 0

and this
#network 10.10.10.0 0.0.0.255 area 0
#network 10.10.20.0 0.0.0.255 area 0

thanks

As far as I know they both do the same thing pretty much

For the first two statements, interfaces with the exact addresses of 10.10.10.1 and 10.10.20.1 are put in area 0, while for the last two statements, interfaces with an address of 10.10.10.x (so 10.10.10.1,.2.3,etc) and 10.10.20.x (so 10.10.20.1,.2.3,etc) are put in area 0.

hope this helps