exit value: 0
exit value: 0
exit value: 0
exit value: 1
exit value: 0
exit value: 0
exit value: 0
exit value: 0
exit value: 1
exit value: 0
exit value: 0
exit value: 0
exit value: 0
exit value: 0
exit value: 1
exit value: 1
exit value: 0
exit value: 0
exit value: 1