>> java Main buildhouse1.txt 50

The project is realizable.

Tasks:

Task 1:
    Name: Build walls
    Time: 4
    Manpower: 2
    Slack: 0
    Earliest Start: 4
    Latest Start: 4
    Tasks which depend: 2 3

Task 2:
    Name: Build roofs
    Time: 6
    Manpower: 4
    Slack: 0
    Earliest Start: 8
    Latest Start: 8
    Tasks which depend: 3 4 7

Task 3:
    Name: Put on wallpapers
    Time: 1
    Manpower: 2
    Slack: 3
    Earliest Start: 14
    Latest Start: 17
    Tasks which depend: 8

Task 4:
    Name: Put on tiles
    Time: 1
    Manpower: 3
    Slack: 0
    Earliest Start: 14
    Latest Start: 14
    Tasks which depend:

Task 5:
    Name: Build foundation
    Time: 4
    Manpower: 2
    Slack: 0
    Earliest Start: 0
    Latest Start: 0
    Tasks which depend: 1 6

Task 6:
    Name: Make floor
    Time: 2
    Manpower: 2
    Slack: 8
    Earliest Start: 4
    Latest Start: 12
    Tasks which depend: 7

Task 7:
    Name: Put carpet floor
    Time: 4
    Manpower: 2
    Slack: 0
    Earliest Start: 14
    Latest Start: 14
    Tasks which depend: 8

Task 8:
    Name: Move in
    Time: 4
    Manpower: 4
    Slack: 0
    Earliest Start: 18
    Latest Start: 18
    Tasks which depend:

Times:

Time: 0
            Starting: 5 (Build foundation)
    Current manpower: 48

Time: 4
            Starting: 1 (Build walls)
            Starting: 6 (Make floor)
            Finished: 5 (Build foundation)
    Current manpower: 46

Time: 6
            Finished: 6 (Make floor)
    Current manpower: 48

Time: 8
            Starting: 2 (Build roofs)
            Finished: 1 (Build walls)
    Current manpower: 46

Time: 14
            Starting: 3 (Put on wallpapers)
            Starting: 4 (Put on tiles)
            Starting: 7 (Put carpet floor)
            Finished: 2 (Build roofs)
    Current manpower: 43

Time: 15
            Finished: 3 (Put on wallpapers)
            Finished: 4 (Put on tiles)
    Current manpower: 48

Time: 18
            Starting: 8 (Move in)
            Finished: 7 (Put carpet floor)
    Current manpower: 46

Time: 22
            Finished: 8 (Move in)
    Current manpower: 50

**** Shortest possible project execution is 22. ****

>> java Main buildhouse2.txt 50

The project is not realizable.
Put on tiles -> Build roofs -> Build walls -> Make floor -> Put on wallpapers -> Build walls

>> java Main buildrail.txt 70

The project is realizable.

Tasks:

Task 1:
    Name: Install pavement
    Time: 20
    Manpower: 10
    Slack: 0
    Earliest Start: 186
    Latest Start: 186
    Tasks which depend:

Task 2:
    Name: Install railing
    Time: 7
    Manpower: 10
    Slack: 0
    Earliest Start: 5
    Latest Start: 5
    Tasks which depend:

Task 3:
    Name: Install ticketmachine
    Time: 1
    Manpower: 10
    Slack: 0
    Earliest Start: 63
    Latest Start: 63
    Tasks which depend:

Task 4:
    Name: Paint tower 1 with arch
    Time: 15
    Manpower: 6
    Slack: 0
    Earliest Start: 119
    Latest Start: 119
    Tasks which depend:

Task 5:
    Name: Paint tower 2
    Time: 12
    Manpower: 6
    Slack: 0
    Earliest Start: 124
    Latest Start: 124
    Tasks which depend:

Task 6:
    Name: Paint trusses
    Time: 27
    Manpower: 6
    Slack: 0
    Earliest Start: 186
    Latest Start: 186
    Tasks which depend:

Task 7:
    Name: Paint cables and rods
    Time: 18
    Manpower: 6
    Slack: 0
    Earliest Start: 186
    Latest Start: 186
    Tasks which depend:

Task 8:
    Name: Put lane tunnel and intersection
    Time: 12
    Manpower: 7
    Slack: 0
    Earliest Start: 51
    Latest Start: 51
    Tasks which depend: 3 31

Task 9:
    Name: Setup barrack
    Time: 3
    Manpower: 10
    Slack: 0
    Earliest Start: 0
    Latest Start: 0
    Tasks which depend: 10 11 12 14 16 17

Task 10:
    Name: Prepare storage
    Time: 2
    Manpower: 4
    Slack: 0
    Earliest Start: 3
    Latest Start: 3
    Tasks which depend: 2

Task 11:
    Name: Rig ramspace reinforcing
    Time: 1
    Manpower: 4
    Slack: 0
    Earliest Start: 3
    Latest Start: 3
    Tasks which depend: 18 19 20

Task 12:
    Name: Build tunnel
    Time: 30
    Manpower: 12
    Slack: 0
    Earliest Start: 3
    Latest Start: 3
    Tasks which depend: 13

Task 13:
    Name: Clean tunnel
    Time: 18
    Manpower: 12
    Slack: 0
    Earliest Start: 33
    Latest Start: 33
    Tasks which depend: 8

Task 14:
    Name: Build intersection
    Time: 25
    Manpower: 12
    Slack: 0
    Earliest Start: 3
    Latest Start: 3
    Tasks which depend: 15

Task 15:
    Name: Clean intersection
    Time: 20
    Manpower: 12
    Slack: 3
    Earliest Start: 28
    Latest Start: 31
    Tasks which depend: 8

Task 16:
    Name: Build towerfoundation 1
    Time: 35
    Manpower: 12
    Slack: 6
    Earliest Start: 3
    Latest Start: 9
    Tasks which depend: 21

Task 17:
    Name: Build towerfoundation 2
    Time: 45
    Manpower: 12
    Slack: 0
    Earliest Start: 3
    Latest Start: 3
    Tasks which depend: 22

Task 18:
    Name: Make armouring tower 1
    Time: 40
    Manpower: 4
    Slack: 0
    Earliest Start: 4
    Latest Start: 4
    Tasks which depend: 21

Task 19:
    Name: Make armouring tower 2
    Time: 25
    Manpower: 4
    Slack: 19
    Earliest Start: 4
    Latest Start: 23
    Tasks which depend: 22

Task 20:
    Name: Make armouring arch
    Time: 12
    Manpower: 4
    Slack: 0
    Earliest Start: 4
    Latest Start: 4
    Tasks which depend: 23

Task 21:
    Name: Encase and armour tower 1
    Time: 15
    Manpower: 5
    Slack: 0
    Earliest Start: 44
    Latest Start: 44
    Tasks which depend: 24

Task 22:
    Name: Encase and armour tower 2
    Time: 16
    Manpower: 5
    Slack: 0
    Earliest Start: 48
    Latest Start: 48
    Tasks which depend: 25

Task 23:
    Name: Encase and armour arch
    Time: 30
    Manpower: 5
    Slack: 0
    Earliest Start: 16
    Latest Start: 16
    Tasks which depend: 26

Task 24:
    Name: Cast tower 1
    Time: 60
    Manpower: 7
    Slack: 0
    Earliest Start: 59
    Latest Start: 59
    Tasks which depend: 4 27

Task 25:
    Name: Cast tower 2
    Time: 60
    Manpower: 7
    Slack: 0
    Earliest Start: 64
    Latest Start: 64
    Tasks which depend: 5 27

Task 26:
    Name: Cast arch
    Time: 20
    Manpower: 7
    Slack: 140
    Earliest Start: 46
    Latest Start: 186
    Tasks which depend: 31

Task 27:
    Name: Stretch two maincables
    Time: 25
    Manpower: 10
    Slack: 0
    Earliest Start: 124
    Latest Start: 124
    Tasks which depend: 28 29

Task 28:
    Name: Build truss 1 with rods
    Time: 30
    Manpower: 10
    Slack: 7
    Earliest Start: 149
    Latest Start: 156
    Tasks which depend: 1 6 7 30

Task 29:
    Name: Build truss 2 with rods
    Time: 37
    Manpower: 10
    Slack: 0
    Earliest Start: 149
    Latest Start: 149
    Tasks which depend: 1 6 7 30

Task 30:
    Name: Cast lane on truss
    Time: 20
    Manpower: 7
    Slack: 0
    Earliest Start: 186
    Latest Start: 186
    Tasks which depend: 31

Task 31:
    Name: Polish lane on arch
    Time: 12
    Manpower: 7
    Slack: 0
    Earliest Start: 206
    Latest Start: 206
    Tasks which depend:

Times:

Time: 0
            Starting: 9 (Setup barrack)
    Current manpower: 60

Time: 3
            Starting: 10 (Prepare storage)
            Starting: 11 (Rig ramspace reinforcing)
            Starting: 12 (Build tunnel)
            Starting: 14 (Build intersection)
            Starting: 16 (Build towerfoundation 1)
            Starting: 17 (Build towerfoundation 2)
            Finished: 9 (Setup barrack)
    Current manpower: 14

Time: 4
            Starting: 18 (Make armouring tower 1)
            Starting: 19 (Make armouring tower 2)
            Starting: 20 (Make armouring arch)
            Finished: 11 (Rig ramspace reinforcing)
    Current manpower: 6

Time: 5
            Starting: 2 (Install railing)
            Finished: 10 (Prepare storage)
    Current manpower: 0

Time: 12
            Finished: 2 (Install railing)
    Current manpower: 10

Time: 16
            Starting: 23 (Encase and armour arch)
            Finished: 20 (Make armouring arch)
    Current manpower: 9

Time: 28
            Starting: 15 (Clean intersection)
            Finished: 14 (Build intersection)
    Current manpower: 9

Time: 29
            Finished: 19 (Make armouring tower 2)
    Current manpower: 13

Time: 33
            Starting: 13 (Clean tunnel)
            Finished: 12 (Build tunnel)
    Current manpower: 13

Time: 38
            Finished: 16 (Build towerfoundation 1)
    Current manpower: 25

Time: 44
            Starting: 21 (Encase and armour tower 1)
            Finished: 18 (Make armouring tower 1)
    Current manpower: 24

Time: 46
            Starting: 26 (Cast arch)
            Finished: 23 (Encase and armour arch)
    Current manpower: 22

Time: 48
            Starting: 22 (Encase and armour tower 2)
            Finished: 15 (Clean intersection)
            Finished: 17 (Build towerfoundation 2)
    Current manpower: 41

Time: 51
            Starting: 8 (Put lane tunnel and intersection)
            Finished: 13 (Clean tunnel)
    Current manpower: 46

Time: 59
            Starting: 24 (Cast tower 1)
            Finished: 21 (Encase and armour tower 1)
    Current manpower: 44

Time: 63
            Starting: 3 (Install ticketmachine)
            Finished: 8 (Put lane tunnel and intersection)
    Current manpower: 41

Time: 64
            Starting: 25 (Cast tower 2)
            Finished: 3 (Install ticketmachine)
            Finished: 22 (Encase and armour tower 2)
    Current manpower: 49

Time: 66
            Finished: 26 (Cast arch)
    Current manpower: 56

Time: 119
            Starting: 4 (Paint tower 1 with arch)
            Finished: 24 (Cast tower 1)
    Current manpower: 57

Time: 124
            Starting: 5 (Paint tower 2)
            Starting: 27 (Stretch two maincables)
            Finished: 25 (Cast tower 2)
    Current manpower: 48

Time: 134
            Finished: 4 (Paint tower 1 with arch)
    Current manpower: 54

Time: 136
            Finished: 5 (Paint tower 2)
    Current manpower: 60

Time: 149
            Starting: 28 (Build truss 1 with rods)
            Starting: 29 (Build truss 2 with rods)
            Finished: 27 (Stretch two maincables)
    Current manpower: 50

Time: 179
            Finished: 28 (Build truss 1 with rods)
    Current manpower: 60

Time: 186
            Starting: 1 (Install pavement)
            Starting: 6 (Paint trusses)
            Starting: 7 (Paint cables and rods)
            Starting: 30 (Cast lane on truss)
            Finished: 29 (Build truss 2 with rods)
    Current manpower: 41

Time: 204
            Finished: 7 (Paint cables and rods)
    Current manpower: 47

Time: 206
            Starting: 31 (Polish lane on arch)
            Finished: 1 (Install pavement)
            Finished: 30 (Cast lane on truss)
    Current manpower: 57

Time: 213
            Finished: 6 (Paint trusses)
    Current manpower: 63

Time: 218
            Finished: 31 (Polish lane on arch)
    Current manpower: 70

**** Shortest possible project execution is 218. ****