0 N 2 0 0 0 E1 Elevator dormant 0 N 2 0 0 0 U1 User 1 p=152 arrives at floor 0, destination is 2 20 D 2 0 0 0 E6 Elevator prepares to move 35 D 2 0 0 0 E8 Elevator moving down 38 D 1 0 0 0 U1 User 2 p=1120 arrives at floor 4, destination is 1 96 D 1 0 0 0 E8 Elevator moving down 136 D 0 0 0 0 U1 User 3 p=972 arrives at floor 2, destination is 1 141 D 0 0 0 0 U1 User 4 p=942 arrives at floor 2, destination is 1 152 D 0 0 0 0 U4 User 1 decides to give up, leaves the system 180 D 0 0 X 0 E9 Elevator changes bussy state 180 D 0 0 X 0 E2 Elevator stops 180 N 0 0 X 0 E3 Elevator doors start to open 200 N 0 X X 0 E4 Doors open, nobody is there 256 N 0 0 X X E5 Elevator doors start to close 276 U 0 0 X 0 E6 Elevator prepares to move 291 U 0 0 X 0 U1 User 5 p=842 arrives at floor 3, destination is 1 291 U 0 0 X 0 E7 Elevator moving up 342 U 1 0 X 0 E7 Elevator moving up 364 U 2 0 X 0 U1 User 6 p=176 arrives at floor 2, destination is 1 393 U 2 0 X 0 E7 Elevator moving up 444 U 3 0 X 0 E7 Elevator moving up 480 U 4 0 0 0 E9 Elevator changes bussy state 509 U 4 0 X 0 E9 Elevator changes bussy state 509 U 4 0 X 0 E2 Elevator stops 509 N 4 0 X 0 E3 Elevator doors start to open 529 N 4 X X 0 U5 User 2 gets in 540 D 4 X X 0 U4 User 6 decides to give up, leaves the system 554 D 4 0 X X E5 Elevator doors start to close 574 D 4 0 X 0 E6 Elevator prepares to move 589 D 4 0 X 0 E8 Elevator moving down 602 D 3 0 X 0 U1 User 7 p=581 arrives at floor 1, destination is 2 673 D 3 0 X 0 E2 Elevator stops 673 D 3 0 X 0 E3 Elevator doors start to open 693 D 3 X X 0 U5 User 5 gets in 749 D 3 0 X X E5 Elevator doors start to close 769 D 3 0 X 0 E6 Elevator prepares to move 784 D 3 0 X 0 E8 Elevator moving down 827 D 2 0 X 0 U1 User 8 p=571 arrives at floor 1, destination is 0 868 D 2 0 X 0 E2 Elevator stops 868 D 2 0 X 0 E3 Elevator doors start to open 876 D 2 X X 0 U1 User 9 p=1124 arrives at floor 1, destination is 3 888 D 2 X X 0 U5 User 3 gets in 913 D 2 X X 0 U5 User 4 gets in 944 D 2 0 X X E5 Elevator doors start to close 964 D 2 0 X 0 E6 Elevator prepares to move 979 D 2 0 X 0 E8 Elevator moving down 1048 D 1 0 X 0 U1 User 10 p=952 arrives at floor 0, destination is 4 1063 D 1 0 X 0 E2 Elevator stops 1063 D 1 0 X 0 E3 Elevator doors start to open 1083 D 1 X X 0 U6 User 4 gets out, leaves the system 1108 D 1 X X 0 U6 User 3 gets out, leaves the system 1133 D 1 X X 0 U6 User 5 gets out, leaves the system 1139 D 1 X X 0 E5 Doors flutter 1158 D 1 X X 0 U6 User 2 gets out, leaves the system 1179 D 1 X X 0 E5 Doors flutter 1183 D 1 X X 0 U4 User 7 decides to give up, leaves the system 1183 D 1 X X 0 U5 User 7 gets in 1208 D 1 X X 0 U5 User 8 gets in 1219 D 1 X X 0 E5 Doors flutter 1233 D 1 X X 0 U5 User 9 gets in 1259 D 1 0 X X E5 Elevator doors start to close 1279 D 1 0 X 0 E6 Elevator prepares to move 1294 D 1 0 X 0 E8 Elevator moving down 1363 D 0 0 0 0 E9 Elevator changes bussy state 1378 D 0 0 X 0 E9 Elevator changes bussy state 1378 D 0 0 X 0 E2 Elevator stops 1378 U 0 0 X 0 E3 Elevator doors start to open 1398 U 0 X X 0 U6 User 8 gets out, leaves the system 1423 U 0 X X 0 U5 User 10 gets in 1454 U 0 0 X X E5 Elevator doors start to close 1474 U 0 0 X 0 E6 Elevator prepares to move 1489 U 0 0 X 0 E7 Elevator moving up 1554 U 1 0 X 0 E2 Elevator stops 1554 U 1 0 X 0 E3 Elevator doors start to open 1574 U 1 X X 0 E4 Doors open, nobody is there 1630 U 1 0 X X E5 Elevator doors start to close 1650 U 1 0 X 0 E6 Elevator prepares to move 1665 U 1 0 X 0 E7 Elevator moving up