ex1.bash : res=10035335144067
	time: 0:00.06 real, 0.04 user, 0.01 sys
	context-switch:	5+1, page-faults: 0+200

ex1-c : res=10035335144067
	time: 0:00.00 real, 0.00 user, 0.00 sys
	context-switch:	0+1, page-faults: 0+80

ex2.bash : res=3817372618036
	time: 0:06.69 real, 6.68 user, 0.00 sys
	context-switch:	689+1, page-faults: 0+5949

ex2-c : res=3817372618036
	time: 0:00.06 real, 0.05 user, 0.00 sys
	context-switch:	6+1, page-faults: 0+662