Modify the following code to produce the output shown. Use proper indentation techniques. You must not make any changes other than inserting braces. The compiler ignores indentation in a C++ program. We eliminated the indentation from the following code to make the problem more challenging. [Note: It’s possible that no modification is necessary. The code template is shown in the '提交评测']

No input.

a) Assuming x = 5 and y = 8, the following output is produced.

@@@@@
$$$$$
&&&&&

b) Assuming x = 5 and y = 8, the following output is produced.

@@@@@

c) Assuming x = 5 and y = 8, the following output is produced.

@@@@@
&&&&&

d) Assuming x = 5 and y = 7, the following output is produced. [Note: The last three output statements after the else are all part of a block.]

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$$$$$
&&&&&