Use java

discrete structure book $($DStructureBook$)$

In the Discrete Structures classroom Mali's teacher told the students to open the book to page p$.$ At that time, Mali might

The book is still open at page k$,$ so Mali can choose to open the book by starting at the first page, the last page, or starting at the next k page, but

You can open one page at a time until you reach the desired page. But if Mali opens the book and is stuck at page k$,$ if you have to flip to start at page $1$ or the last page, count the

Flip this time to add $1$ more time as well.

In the books that Mali's teachers let students use, page $1$ is always on the right side. And when Mali turns over page $1,$ you will see pages $2$ and $3$ as shown in the picture.

The bottom and each sheet of a book are always printed on two sides, except for the last page, where the other side may be blank.

If a book has N pages and Mali's teacher tells her to open page p$,$ and the page Mali left open is page k$,$ find the number of times in

Minimum number of page flips up to page p$.$ Mali can choose to start at the first page, last page, or page k to get the number of flips.

Minimal page turns If Mali cannot open to page p that the teacher specified. Find the value for the least number of flips and enter the result as the value.

negative instead

input data

The input has $3$ lines.

$1.$ The first line consists of one positive integer representing the total number of pages of the book $$ pages, given that

$1<=<=10,000,$ where N is always the correct value.

$2.$ The second line contains one positive integer representing the page number p that you want to open.

$3.$ The third line contains one positive integer representing the number k that is left open. If k $=0,$ it means

The book is closed.

Export data

The output data is $1$ line. Print the result that is the minimum number of page turns.

Example $1$

data input data output

$6$

$2$

$4$

Export data

$1$

If you open from the first page, you must flip $2$ times. But if you open from the last page, you must flip $3$ times. And if you open from page $4,$ you will flip only $1.$

times, so the answer is $1$

Example $2$

If you open it from the first page, you have to flip it $3$ times. But if you open it from the last page, you have to flip it $0$ times. And if you open it from page $4,$ you have to flip it $0$ times.

Likewise, so the answer is $0.$

Example $3$

Because the book is closed If opening from the first page and opening from page $0$ to page $8,$ it will be the same, meaning you will have to flip $5$ times. But if opening from page

In the end, it had to be flipped $2$ times, but because page $8$ couldn't be opened, a smaller number of times was chosen and a minus sign was put in front of the answer.

is $-2$

Example $4$

Because the book is stuck on page $8,$ which is the same page as the page you want to open. So there is no need to turn the page. But because page $8$ doesn't

can be opened because it exceeds the bounds of the book page So put a minus sign. The answer page is $-0.$

input data

$5$

$4$

$5$

$0$

input data

$6$

$8$

$0$

Export data

$-2$

input data

$6$

$8$

$8$

Export data

$-0$