1.000: C0 arrived [ ]
1.000: C0 service begin (by S0 [ ])
1.200: C1 arrived [ ]
1.200: C1 service begin (by S1 [ ])
1.400: C2 arrived [ ]
1.400: C2 joined shop queue [ ]
1.600: C3 arrived [ C2 ]
1.600: C3 joined shop queue [ C2 ]
2.100: C4 arrived [ C2 C3 ]
2.100: C4 departed
2.200: C1 service done (by S1 [ ])
2.200: C1 departed
2.200: C2 service begin (by S1 [ ])
2.500: C0 service done (by S0 [ ])
2.500: C0 departed
2.500: C3 service begin (by S0 [ ])
3.200: C2 service done (by S1 [ ])
3.200: C2 departed
3.500: C3 service done (by S0 [ ])
3.500: C3 departed