"""Binary Exponentiation.""" # Author : Junth Basnet # Time Complexity : O(logn) def binary_exponentiation(a, n): if n == 0: return 1 elif n % 2 == 1: return binary_exponentiation(a, n - 1) * a else: b = binary_exponentiation(a, n / 2) return b * b if __name__ == "__main__": try: BASE = int(input("Enter Base : ").strip()) POWER = int(input("Enter Power : ").strip()) except ValueError: print("Invalid literal for integer") RESULT = binary_exponentiation(BASE, POWER) print(f"{BASE}^({POWER}) : {RESULT}")