def factorial(n):
    if n == 0:
        return 1
    else:
        return n * factorial(n-1)

def questions():
    print("ADD (1)")
    print("SUBTRACT (2)")
    print("MULTIPLY (3)")
    print("DIVIDE (4)")
    print("FACTORIAL (5)")
    print("POWERS (6)")
    print("SQUARE (7)")
    print("SQUARE ROOT (8)")
    print("CUBE ROOT (9)")
    print("AVERAGE (10)")
    print("BINARY FIRST NUMBER (11)")
    print("BINARY ADD (12)")
    print("BINARY SUBTRACT (13)")
    print("BINARY MULTIPLY (14)")
    print("BINARY DIVIDE (15)")
    print("RANDOM NUMBER (16)")

    choice = input("CHOOSE AN OPERATION: ")

    return choice

import math
import random
import sys

'''print("ADD (1)")
print("SUBTRACT (2)")
print("MULTIPLY (3)")
print("DIVIDE (4)")
print("FACTORIAL (5)")
print("POWERS (6)")
print("SQUARE (7)")
print("SQUARE ROOT (8)")
print("CUBE ROOT (9)")
print("AVERAGE (10)")
print("BINARY FIRST NUMBER (11)")
print("BINARY ADD (12)")
print("BINARY SUBTRACT (13)")
print("BINARY MULTIPLY (14)")
print("BINARY DIVIDE (15)")
print("RANDOM NUMBER (16)")

choice = input("CHOOSE AN OPERATION: ")
 '''

choice =  questions()

if choice == "1":
    a = input("INPUT FIRST NUMBER: ")
    b = input("INPUT SECOND NUMBER: ")
    c = int(a) + int(b)
    print(c)
    second1 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if choice == "2":
    a = input("INPUT FIRST NUMBER: ")
    b = input("INPUT SECOND NUMBER: ")
    c = int(a) - int(b)
    print(c)
    second1 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if choice == "3":
    a = input("INPUT FIRST NUMBER: ")
    b = input("INPUT SECOND NUMBER: ")
    c = int(a) * int(b)
    print(c)
    second1 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if choice == "4":
    a = input("INPUT FIRST NUMBER: ")
    b = input("INPUT SECOND NUMBER: ")
    c = int(a) / int(b)
    print(c)
    second1 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if choice == "5":
    a = input("INPUT NUMBER: ")
    c = factorial(int(a))
    print(c)
    second1 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if choice == "6":
    a = input("INPUT WHOLE NUMBER: ")
    b = input("INPUT POWER: ")
    c = int(a) ** int(b)
    print(c)
    second1 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if choice == "7":
    a = input("INPUT NUMBER: ")
    c = int(a) * int(a)
    print(c)
    second1 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if choice == "8":
    a = input("INPUT NUMBER: ")
    c = math.sqrt(int(a))
    print(c)
    second1 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if choice == "9":
    a = input("INPUT NUMBER: ")
    c = math.pow(int(a), 1/3)
    print(c)
    second1 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if choice == "10":
    a = input("INPUT FIRST NUMBER: ")
    b = input("INPUT SECOND NUMBER: ")
    c = (int(a) + int(b)) / 2
    print(c)
    second1 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if choice == "11":
    a = input("INPUT NUMBER TO CONVERT: ")
    c = bin(int(a))[2:].zfill(1)
    print(c)
    second11 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if choice == "12":
    a = input("INPUT FIRST NUMBER: ")
    b = input("INPUT SECOND NUMBER: ")
    sum = int(a) + int(b)
    c = bin(sum)[2:].zfill(1)
    print(c)
    second12 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if choice == "13":
    a = input("INPUT FIRST NUMBER: ")
    b = input("INPUT SECOND NUMBER: ")
    difference = int(a) - int(b)
    c = bin(difference)[2:].zfill(1)
    print(c)
    second13 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if choice == "14":
    a = input("INPUT FIRST NUMBER: ")
    b = input("INPUT SECOND NUMBER: ")
    product = int(a) * int(b)
    c = bin(product)[2:].zfill(1)
    print(c)
    second14 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if choice == "15":
    a = input("INPUT FIRST NUMBER: ")
    b = input("INPUT SECOND NUMBER: ")
    quotient = int(a) // int(b)
    print(bin(quotient)[2:].zfill(1))
    c = bin(product)[2:].zfill(1)
    print(c)
    second15 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if choice == "16":
    a = input("INPUT LOWEST NUMBER IN RANGE: ")
    b = input("INPUT HIGHEST NUMBER IN RANGE: ")
    c = random.randint(int(a),int(b))
    print(c)
    second16 = input("DO YOU WANT TO PERFORM ANOTHER OPERATION USING " + str(c) + "? (y/n)")

if second1 != "y":
    sys.exit()


choice2 = questions()

if choice2 == "1":
    b = input("INPUT SECOND NUMBER: ")
    d = int(c) + int(b)
    print(d)

if choice2 == "2":
    b = input("INPUT SECOND NUMBER: ")
    d = int(c) - int(b)
    print(d)

if choice2 == "3":
    b = input("INPUT SECOND NUMBER: ")
    d = int(c) * int(b)
    print(d)

if choice2 == "4":
    b = input("INPUT SECOND NUMBER: ")
    d = int(c) / int(b)
    print(d)

if choice2 == "5":
    d = factorial(int(c))
    print(d)

if choice2 == "6":
    b = input("INPUT POWER: ")
    d = int(c) ** int(b)
    print(d)

if choice2 == "7":
    d = int(c) * int(c)
    print(d)

if choice2 == "8":
    d = math.sqrt(int(c))
    print(d)

if choice2 == "9":
    d = math.pow(int(c), 1/3)
    print(d)

if choice2 == "10":
    b = input("INPUT SECOND NUMBER: ")
    d = int(c) + int(b) / 2
    print(d)