## Router simulation
## this router has N=3 ports
Ports 4
## each line represents the queue for a single input port
## each number represents the destination of the packet
4 1 2 2 2 1 1 1 1 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 2 2 1 1 1 1 1 2 3 1 2 3 1
1 1 2 2 2 1 1 1 1 1 2 3 1 2 3 1 2 3 1 2 3 3 3 3 3 3 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 4 4 4 4 4
1 2 3 3 2 1 3 2 1 3 3 3 3 3 3 3 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 2 2 2 2 2 2 1 1 1 1 1 1 1 1
1 2 2 1 1 1 1 1 1 1 1 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 
#needs this additional line as comment