[INSTRUCTIONS]

You are a program-analysis assistant. Your task is to statically analyze the control dependence of a given code snippet. 

## 1. Control Dependence Definition
  Control dependence captures the influence of control-flow decisions on the execution of statements.

  A statement `S2` is control-dependent on `S1` if there is a **transitive** (indirect) chain of **direct** control dependencies from `S1` to `S2`. This is equivalent to saying that `S1` has control dependence over `S2`, meaning `S1`’s condition influences whether `S2` executes.


  **Direct Control Dependence**:
  A statement `S2` is **directly** control-dependent on a statement `S1` if:
  
  1.	`S1` is a conditional control statement (e.g., an `if`, `while`, `for`, `switch`, etc.).
  
  2.	`S1` directly determines whether `S2` executes. That is, `S1` has multiple successor branches, 

  - there exists **at least one branch** in which `S2` **always executes**, and
  - there exists **at least one other branch** in which `S2` does **not necessarily execute**.

    “Not necessarily execute” means that `S2` might execute or might not, but it is **not guaranteed** to execute in that branch.

  `S2` is **control-dependent** on `S1` if there exists a **transitive chain** of control dependencies from `S1` to `S2`, where each intermediate step in the chain represents a **direct** control dependence between two statements.



## 2. Output Format
When asked, “Does line `S1` have control dependence over line `S2`? If so, provide a trace.” You should respond in JSON format as follows:

- If there is a control dependence:

```json
{
  "ControlDependence": true,
  "Trace": [S1, ..., S2]
}
```

- If there is no control dependence:
```json
{
  "ControlDependence": false
}
```

A **trace** represents a **transitive control flow**, where each adjacent pair in the list reflects a **direct** control dependence. The trace must starts with `S1` and ends with `S2`.


    

## 3. Interprocedural Control Dependence
  All dependence analysis is performed within **a single function**. We do not track dependencies across function boundaries. The analysis only applies to variables and control structures inside the **specified function**.


## 4. Example Code Snippet

### Example 1

```python
1  if x > 0:
2      y = 10       # this line is directly control-dependent on line 1 (x>0)
3      if y > 5:
4          z = 20   # this line is directly control-dependent on line 3 (y>5)
5          w = 30   # this line is directly control-dependent on line 3 (y>5)
6  v = 40           # this line is NOT control-dependent on any line
```


**Analysis**:
- Line 2 is directly control-dependent on line 1 (`x>0`)
- Lines 4 and 5 are directly control-dependent on line 3 (`y>5`).
- Lines 4 and 5 are **indirectly** control-dependent on line 1 (`x>0`) becasue even if line 1 (`x>0`) is `true`, lines 4 and 5 may not execute if line 3’s condition (`y>5`) is `false`. However, since control dependence is transitive, lines 4 and 5 are **indirectly** control-dependent on line 1. 
- Line 6 is not control-dependent on any lines because Line 6 always executes, regardless of whether line 1 (`x>0`) or line 3 (`y>5`) is true or false.



#### Example Question 1.1: 
Does line `1` have control dependence over line `5`? If so, provide a trace.

**Output**: 
```json
{
  "ControlDependence": true,
  "Trace": [1, 3, 5]
}
```

#### Example Question 1.2:
Does line `3` have control dependence over line `6`? If so, provide a trace.

**Output**: 
```json
{
  "ControlDependence": false
}
```


### Example 2

```python
1  count = 0
2  if count < 5:
3      count += 1
4  print("Step 1 done")
5  while count < 10:
6      if count == 7:
7          break
8      if count % 2 == 0:
9          continue
10     count += 2
11     if count > 9:
12         count = 9
13     print("Iteration done")
14 print("End of program")
```

#### Example Question 2.1: 
Does line `5` have control dependence over line `13`? If so, provide a trace.

**Analysis**:
  - Line 13 is directly control-dependent on line 8 because if line 8 evaluates to `true`, continue skips line 13 for that iteration.
  - Line 8 is directly control-dependent on line 6 because if line 6 evaluates to `true`, the break statement terminates the loop, preventing line 8 from executing.
  - Line 6 is directly control-dependent on line 5 because the loop condition at line 5 determines whether line 6 executes. If line 5 evaluates to `false`, execution skips the loop entirely.


Since control dependence is transitive, line 5 indirectly controls line 13 through lines 6 and 8. The trace is `5->6->8->13`.

**Output**:
```json
{
  "ControlDependence": true,
  "Trace": [5, 6, 8, 13]
}
```

#### Example Question 2.2: 
Does line `8` have control dependence over line `10`? If so, provide a trace.


**Analysis**: Similar to the explanation above, line 8 is an `if` condition inside the `while` loop with a `continue`, so it can make the execution skip the rest of the loop entirely, including line 10. Therefore, line 10 directly control-dependent on 8.



**Output**:
```json
{
  "ControlDependence": true,
  "Trace": [8, 10]
}
```

#### Example Question 2.3: 
Does line `5` have control dependence over line `14`? If so, provide a trace.

**Analysis**: Line 5 doesn't affect whether line 14 is reached. Line 14 is outside the while loop (lines 5 -- 13) and will be executed regardless of the condition. 

**Output**:
```json
{
  "ControlDependence": false
}
```


#### Example Question 2.4: 
Does line `2` have control dependence over line `12`? If so, provide a trace.

**Analysis**: Line 2 doesn't affect whether line 12 is reached. The condition in line 2 only controls whether line 3 is executed. Line 12 is in while loop (line 5 -- 13) and will or will not be executed regardless of the condition in line 2. 

**Output**:
```json
{
  "ControlDependence": false
}
```

---

[YOUR TURN]

Below is **your target snippet**. 

```Java
1   import java.io.BufferedReader;
2   import java.io.IOException;
3   import java.io.InputStreamReader;
4   public class Main {
5   	public static void main(String[] args) {
6   		Scanner sc = new Scanner();
7   		int a = sc.nextInt();
8   		int b = sc.nextInt();
9   		int c = sc.nextInt();
10  		if((a < c && c < b) ||
11  				(b < c && c < a) )
12  			System.out.println("Yes");
13  		else
14  			System.out.println("No");
15  	}
16  }
17  class Scanner {
18  	private static final int SPACE = (int)' ';
19  	private static final int LINE_END_0 = 13;
20  	private static final int LINE_END_1 = 10;
21  	private static final int BEFORE = -1;
22  	private BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
23  	public String next(){
24  		StringBuilder sb = new StringBuilder();
25  		int length = BEFORE;
26  		readLoop: while(true) {
27  			try {
28  				int value = br.read();
29  				switch(value) {
30  				case LINE_END_1:
31  					if(length == BEFORE)
32  						break;
33  					if((int)sb.charAt(length) == LINE_END_0)
34  						sb.deleteCharAt(length);
35  				case SPACE:
36  					break readLoop;
37  				}
38  				sb.append((char)value);
39  				length++;
40  			} catch (IOException e) {
41  				e.printStackTrace();
42  			}
43  		}
44  		return sb.toString();
45  	}
46  	public String[] nextArray(int length) {
47  		String[] array = new String[length];
48  		for(int i = 0; i < length; i++)
49  			array[i] = next();
50  		return array;
51  	}
52  	public double nextDouble() {
53  		return Double.parseDouble(next());
54  	}
55  	public double[] nextDoubleArray(int length) {
56  		double[] array = new double[length];
57  		for(int i = 0; i < length; i++)
58  			array[i] = nextDouble();
59  		return array;
60  	}
61  	public int nextInt() {
62  		return Integer.parseInt(next());
63  	}
64  	public int[] nextIntArray(int length) {
65  		int[] array = new int[length];
66  		for(int i = 0; i < length; i++)
67  			array[i] = nextInt();
68  		return array;
69  	}
70  	public long nextLong() {
71  		return Long.parseLong(next());
72  	}
73  	public long[] nextLongArray(int length) {
74  		long[] array = new long[length];
75  		for(int i = 0; i < length; i++)
76  			array[i] = nextLong();
77  		return array;
78  	}
79  	public boolean ready() {
80  		try {
81  			return br.ready();
82  		} catch (IOException e) {
83  			e.printStackTrace();
84  		}
85  		return false;
86  	}
87  }
```


**Question**: Does line `31` have control dependence over line `39` in function `next`? If so, provide a trace.

**Output**:


Ground truth answer: no