A masala. Daraja

a,b=map(int,input().split())

if a==0:

  print(0)

else:

  print(a**b)

B masala. Chiroyli sana

a=int(input())

print(a//2-4)

C masala. Jadval

a=int(input())

print((a+1)*2)

D masala. Simmetriya

a,b,c=map(int,input().split())

if b==0 or a==0:

  print(0.0)

else:

  print(-b/(2*a))

E masala. Jadval 2

a,b=map(int,input().split())

print(4+(a-1)+(b-1))