# A Odds of Oddness
n = int(input())
c = []
for i in range(1,n+1):
    if i % 2:
        c.append(i)
x = len(c)/n
print(x) n = int(input()) n int(input()) int input() input c = [] c [] for i in range(1,n+1):
    if i % 2:
        c.append(i) i range(1,n+1) range 1 n+1 n 1 if i % 2:
        c.append(i) i % 2 i 2 c.append(i) c.append c append i x = len(c)/n x len(c)/n len(c) len c n print(x) print x x = len(c)/n len(c)/n x n = int(input()) int(input()) n c = [] [] c
# A Odds of Oddness
n = int(input())
c = []
for i in range(1,n+1):
    if i % 2:
        c.append(i)
x = len(c)/n
print(x)
