可达集合R

先行集合Q

交集A = R ∩ Q

s1

1, 5, 8, 9, 10

1

1

s2

2, 3, 4, 5, 8, 10

2

2

s3

3, 4, 5, 8, 10

2, 3

3

s4

4

2, 3, 4

4

s5

5

1, 2, 3, 5, 9, 10

5

s6

6

6, 7

6

s7

6, 7

7

7

s8

8

1, 2, 3, 8

8

s9

5, 9, 10

1, 9

9

s10

5, 10

1, 2, 3, 9, 10

10