Someone is asked to perform the following operations on a randomly chosen number between 1 and 10.

Step 1: Double the chosen number.

Step 2: Add a number K(even number given as input) to the number obtained after Step1
Step 3: Divide the obtained number in Step 2 by 2.
Step 4: Now subtract the obtained number in Step 3 with the original chosen number N
Your task is to find the answer obtained at the end of Step 4 ,i.e,at the end of all the mentioned operations performed on the number chosen.

Example 1:
Input:
K = 10
Output:
5
Explanation:
Suppose chosen number is 3, then after
Step 1: number=6
Step 2: number=6+10=16
Step 3: number=16/2=8
Step 4: 8-3=5(required answer).
No matter what number Rohan chooses
the answer always comes to be 5.
Example 2:
Input:
K = 2
Output:
1
Explanation:
Suppose chosen number is 8, then after
Step 1: number=16
Step 2: number=16+2=18
Step 3: number=18/2=9
Step 4: 9-8=1(required answer).
No matter what number Rohan chooses
the answer always comes to be 1.

Your Task:
You don't need to read input or print anything. Your task is to complete the function mindGame() which takes an Integer K as input and returns the answer.

Expected Time Complexity: O(1)
Expected Auxiliary Space: O(1)

Constraints:
2 <= K <= 10^{8}

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