input.txt: LOCAL /bin/echo input.txt contents > input.txt A: simulation.py input.txt python simulation.py 1 < input.txt > A B: simulation.py input.txt python simulation.py 2 < input.txt > B C: simulation.py input.txt python simulation.py 3 < input.txt > C D: simulation.py input.txt python simulation.py 4 < input.txt > D