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Count ways to express a number as sum of exactly two numbers | Function returns the count of ways express a number as sum of two numbers ..
Driver code"
Solution in Python:
assistant
#Here is code to count ways to express a number as sum of exactly two numbers and the other steps required.
 def CountWays ( n ) :
	ans = ( n - 1 ) // 2
	return ans
N = 8
print ( CountWays ( N ) )