x=10

y=20

if x>10:

  if y>20:

       z=x+y

       print('z is',z)

else:

      print(x)

grade = 90

if grade >= 60:

       print('D')

elif grade >=70:

       print('C')

elif grade >=80:

       print('B')

elif   grade>=90:

       print('A')

number = 10

if number %2==0:

      print(number,'is even')

elif number % 5==0:

     print(number,'is multiple of 2')

x=1

y=-1

z=1

if x>0:

     if y>0:

         print('AAA')

elif z>0:

        print('BBB')

y=0

for i in range(0,10,2):

         y+=i

print(y)

x=0

while x<6:

     if x%2==0:

            continue

     if x==4:

            break

     x +=1

print("x=",x)

sum=0

for i in range(10):

      sum+=i

print(sum)