多道5.txt

操作系统 程序实现一个虚拟机模拟多道的运行环境

<input>
<unit>
<program>A</program>
<step>0,10,cpu</step>
<step>10,15,dev1</step>
<step>15,20,cpu</step>
<step>20,30,dev2</step>
<step>30,40,cpu</step>
</unit>
<unit>
<program>B</program>
<step>0,10,dev1</step>
<step>10,20,cpu</step>
<step>20,25,dev2</step>
<step>25,30,cpu</step>
<step>30,40,dev2</step>
</unit>
<unit>
<program>C</program>
<step>0,13,cpu</step>
<step>13,15,dev2</step>
<step>15,20,dev3</step>
<step>20,35,dev2</step>
<step>35,40,cpu</step>
</unit>
<unit>
<program>D</program>
<step>0,18,dev3</step>
<step>18,25,dev1</step>
<step>25,30,cpu</step>
<step>30,35,dev3</step>
<step>35,48,dev2</step>
</unit>
<unit>
<program>E</program>
<step>0,12,dev2</step>
<step>12,18,dev1</step>
<step>18,20,dev2</step>
<step>20,25,cpu</step>
<step>25,35,dev1</step>
</unit>
<unit>
<program>F</program>
<step>0,15,cpu</step>
<step>15,25,dev3</step>
<step>25,38,cpu</step>
<step>38,40,dev3</step>
<step>40,48,dev1</step>
</unit>
<unit>
<program>G</program>
<step>0,8,dev2</step>
<step>8,20,dev1</step>
<step>20,30,cpu</step>
<step>30,40,dev3</step>
<step>40,48,dev1</step>
</unit>
<unit>
<program>H</program>
<step>0,13,dev1</step>
<step>13,35,dev3</step>
<step>35,40,cpu</step>
<step>40,45,dev3</step>
<step>45,48,cpu</step>
</unit>
<unit>
<program>I</program>
<step>0,13,dev3</step>
<step>13,20,dev1</step>
<step>20,30,cpu</step>
<step>30,37,dev3</step>
<step>37,50,cpu</step>
</unit>
<unit>
<program>J</program>
<step>0,15,dev2</step>
<step>15,25,cpu</step>
<step>25,38,dev3</step>
<step>38,48,dev1</step>
<step>48,55,dev2</step>
</unit>
</input>