1)

n = int(input())

s = 1

k = 2

while k <= n:

   s += (1/k)

   k += 1

print(s)

2)

n = int(input())

m = int(input())

if n < m:

   print('n =',(n+m)/2)

   print('m =',(n+m)*2)

else:

   print('m =',(n+m)/2)

   print('n =',(n+m)*2)