a=float(input())
b= float(input())
if(a%5==0):
if(a<b):
c=b-a-0.5
print(c)
else:
print(b)
else:
print(b)
a=float(input())
b= float(input())
if(a%5==0):
if(a<b):
c=b-a-0.5
print(c)
else:
print(b)
else:
print(b)
The indentation is not correct in your code!!