userIn = int(input('A or B'))
if userIn.lower() == 'a':
do this // quad eq
print('inp 2 num')
num1 = int(input())
num2 = int(input())
operator = input()
if operator.lower() == 'add':
add this
res = 1 + 2
if operator.lower() == 'mul':
mul this
res = 1 * 2
if operator.lower() == 'div':
div this
res = 1 / 2
if operator.lower() == 'sub':
sub this
res = 1 - 2
print(res)
elif userIn.lower() == 'b'
do this // simple eq
else:
do this.// option doesn't exists
nakakatamad. gawin mo nalang