human
Can you provide a code to gCD of a number raised to some power and another number and the other steps required given the following:
GCD of a number raised to some power and another number | Calculates modular exponentiation , i . e . , ( x ^ y ) % p in O ( log y ).
x = x % p Update x if it is more than or equal to p.
If y is odd , multiply x with result.
y must be even now y = y >> 1 y = y / 2.
Returns GCD of a ^ n and b.
Driver code"
Solution in Python:
assistant
#Here is code to gCD of a number raised to some power and another number and the other steps required.
 def power ( x , y , p ) :
	while ( y > 0 ) :
		if ( y & 1 ) :
			res = ( res * x ) % p
		x = ( x * x ) % p
	return res
def gcd ( a , b ) :
	if ( a == 0 ) :
		return b
	return gcd ( b % a , a )
def powerGCD ( a , b , n ) :
	e = power ( a , n , b )
	return gcd ( e , b )
if __name__ == " _ _ main _ _ " :
	a = 5
	b = 4
	n = 2
	print ( powerGCD ( a , b , n ) )