You may hand-draw your answer to this question. Recalling how much we care that you use correct punctuation when you write objects' values, and using the notation of slides 9 through 12 from Program, but fully drawing each abstract syntax tree involved, show the value of p at the end of the following code snippet.
1. Program p = new Program1();
2. Map context = p. newContext();
3. Statement block = p. newBody();
4. Statement s = block. newInstance();
5. p. setName("Get-to-Edge-and-Wait-for-I nfection");
6. s. assembleCall("walk");
7. block. addToBlock(0, s);
8. s. assembleCall("run");
9. block. addToBlock(block. lengthOfBlock(), s);
10. s. assembleWhile(Condition. NEXT_IS_NOT_WALL, block);
11. block. addToBlock(0, s);
12. p. swapBody(block);
13. s. assembleCall("move");
14. block. addToBlock(0, s);
15. s. assembleCall("move");
16. block. addToBlock(block. lengthOfBlock(), s);
17. context. add("run", block);
18. s. assembleCall("move");
19. block = block. newInstance();
20. block. addToBlock(0, s);
21. context. add("walk", block);
22. p. swapContext(context);

The idea that, for each pair of devices v and w, there’s a strict dichotomy between being “in range” or “out of range” is a simplified abstraction. more accurately, there’s a power decay function f (·) that specifies, for a pair of devices at distance δ, the signal strength f(δ) that they’ll be able to achieve on their wireless connection. (we’ll assume that f (δ) decreases with increasing δ.) we might want to build this into our notion of back-up sets as follows: among the k devices in the back-up set of v, there should be at least one that can be reached with very high signal strength, at least one other that can be reached with moderately high signal strength, and so forth. more concretely, we have values p1 ≥ p2 ≥ . . ≥ pk, so that if the back-up set for v consists of devices at distances d1≤d2≤≤dk,thenweshouldhavef(dj)≥pj foreachj. give an algorithm that determines whether it is possible to choose a back-up set for each device subject to this more detailed condition, still requiring that no device should appear in the back-up set of more than b other devices. again, the algorithm should output the back-up sets themselves, provided they can be found.\