n = float(input())
even_num = n // 2;
num = n - even_num
print(num/n) n = float(input()) n float(input()) float input() input even_num = n // 2 even_num n // 2 n 2 num = n - even_num num n - even_num n even_num print(num/n) print num/n num n even_num = n // 2 n // 2 even_num num = n - even_num n - even_num num n = float(input()) float(input()) n
n = float(input())
even_num = n // 2;
num = n - even_num
print(num/n)
