ex1-v1.bash : res=263
	time: 1:25.64 real, 61.31 user, 30.44 sys
	context-switch:	5732+166356, page-faults: 0+7279275

ex1.bash : res=263
	time: 0:00.40 real, 0.40 user, 0.00 sys
	context-switch:	41+1, page-faults: 0+315

ex2.bash : res=1680
	time: 0:07.88 real, 7.87 user, 0.00 sys
	context-switch:	815+1, page-faults: 0+2637