import math
N = int(input())
odd = math.ceil(N/2)
print(odd/N) import math math N = int(input()) N int(input()) int input() input odd = math.ceil(N/2) odd math.ceil(N/2) math.ceil math ceil N/2 N 2 print(odd/N) print odd/N odd N N = int(input()) int(input()) N odd = math.ceil(N/2) math.ceil(N/2) odd
import math
N = int(input())
odd = math.ceil(N/2)
print(odd/N)