Problem:
 Score : 100 points    Problem Statement Given is an integer N .  Takahashi chooses an integer a from the positive integers not greater than N with equal probability.  Find the probability that a is odd.      Constraints  1 \leq N \leq 100         Input Input is given from Standard Input in the following format:  N       Output Print the probability that a is odd.
Your output will be considered correct when its absolute or relative error from the judge's output is at most 10^{-6} .        Sample Input 1 4      Sample Output 1 0.5000000000  There are four positive integers not greater than 4 : 1 , 2 , 3 , and 4 . Among them, we have two odd numbers: 1 and 3 . Thus, the answer is \frac{2}{4} = 0.5 .       Sample Input 2 5      Sample Output 2 0.6000000000       Sample Input 3 1      Sample Output 3 1.0000000000

Solution (Python):
n = int(input())
if n == 1:
    print(1.0000000000)
elif n % 2 == 1:
    print((int(n/2)+1)/n)
else:
    print(1/2)

Solution (Python):
N = int(input())

if N % 2 == 0:
  out = 1/2
else:
  out = ((N+1)/2)/N
  
print(out)

Solution (Python):
import sys
readline = sys.stdin.readline

N = int(readline())


if N % 2 == 0:
  print((N//2) / N)
else:
  print(((N//2)+1) / N)

Solution (Python):
n = int(input())
od = 0
for i in range(n):
  if (i+1) % 2 == 1:
    od += 1
print(od / n)

Solution (Python):
n = int(input())

if n==1:
    print(1)
elif n%2==0:
    print(0.5)
else:
    print(((n+1)/2)/n)

Solution (Python):
n = int(input())

if n == 1:
    print(1)
elif n % 2 == 0:
    print(n/2/n)
else:
    print((int(n/2) +1)/ n)

Solution (Python):
if __name__ == "__main__":
    N = int(input())
    if N % 2 == 1:
        print(float(N//2 + 1) / N)
        exit()
    else:
        print(float(N//2) / N)
        exit()

Solution (Python):

if __name__ == "__main__":
    N = int(input())
    if N == 1:
        print(1/1)
    elif N % 2 == 0:
        print(1/2)
    else:
        print((int(N/2)+1)/N)

Solution (Python):
'''
Created on 2019/09/28

@author: oiwaiman
'''

N = int(input())

counter = 0

for i in range(1,N+1):
    if i%2 == 1:
        counter += 1

print(counter/N)

Solution (Python):
N=int(input())
if N%2==0:
  print(1/2)
if N%2==1:
  print(((N+1)/2)/N)

Solution (Python):
n = int(input())
c = 0
for i in range(1,n+1):
    if i %2 !=0:
        c += 1
print(c/n)

Solution (Python):
a = int(input())
odd_count = 0
for b in range(a+1):
    if b == 0:
        continue
    if b % 2 == 1:
        odd_count += 1
print('{:.10f}'.format(odd_count/a))

Solution (Python):


n = int(input())
if n % 2 == 0:
    print(n/2/n)
else:
    print(((n//2)+1)/n)

Solution (Python):
N = int(input())

if N % 2 == 1:
    print(((N - 1) / 2 + 1) / N)
else:
    print((N / 2) / N)

Solution (Python):
N = int(input())

lst = [i for i in range(N+1)]

i = lst[1::2]

print(len(i)/N)

Solution (Python):
n=int(input())
if n%2==1:
    print((n//2+1)/n)
else:
    print(1/2)

Solution (Python):

"""
Created on Sat Apr 20 20:47:47 2019

@author: Owner
"""

import numpy as np
import sys
import collections
import scipy.misc
import math
from operator import itemgetter
import itertools
import copy
import bisect
import heapq


def prime_decomposition(n):
  i = 2
  table = []
  while i * i <= n:
    while n % i == 0:
      n /= i
      table.append(int(i))
    i += 1
  if n > 1:
    table.append(int(n))
  return table   

def digit(i):
    if i > 0:
        return digit(i//10) + [i%10]
    else:
        return []
    
def getNearestValueIndex(list, num):
    """
    概要: リストからある値に最も近い値のインデックスを取得する関数
    @param list: データ配列
    @param num: 対象値
    @return 対象値に最も近い値
    """

    
    idx = np.abs(np.asarray(list) - num).argmin()
    return idx

def find_index(l, x, default=False):
    if x in l:
        return l.index(x)
    else:
        return default

class UnionFind(object):
    def __init__(self, n=1):
        self.par = [i for i in range(n)]
        self.rank = [0 for _ in range(n)]
        self.size = [1 for _ in range(n)]

    def find(self, x):
        """
        x が属するグループを探索
        """
        if self.par[x] == x:
            return x
        else:
            self.par[x] = self.find(self.par[x])
            return self.par[x]

    def union(self, x, y):
        """
        x と y のグループを結合
        """
        x = self.find(x)
        y = self.find(y)
        if x != y:
            if self.rank[x] < self.rank[y]:
                x, y = y, x
            if self.rank[x] == self.rank[y]:
                self.rank[x] += 1
            self.par[y] = x
            self.size[x] += self.size[y]

    def is_same(self, x, y):
        """
        x と y が同じグループか否か
        """
        return self.find(x) == self.find(y)

    def get_size(self, x):
        """
        x が属するグループの要素数
        """
        x = self.find(x)
        return self.size[x]
    

"""
N, X = map(int, input().split())

x = list(map(int, input().split()))

P = [0]*N
Y = [0]*N
for n in range(N):
    P[n], Y[n] = map(int, input().split())


dp = np.zeros((N+1, 4,4,4))
    
all(nstr.count(c) for c in '753')


ABT = zip(A, B, totAB)
result = 0

sorted(ABT,key=itemgetter(2))
A, B, totAB = zip(*ABT)
A.sort(reverse=True)


(x >> i) & 1


dp = [np.inf]*N
for n in range(N):
    if n == 0:
        dp[n] = 0
    else:
        for k in range(1,K+1):
            if n-k >= 0:
                dp[n] = min(dp[n], dp[n-k] + abs(h[n]-h[n-k]))
            else:
                break

add = 1 
res = 0
sums = [0]*(len(nums)+1)
for i in range(len(nums)):
    sums[i+1] = sums[i] + nums[i]
for i in range(0, len(nums), 2):
    left = i
    right = min(i+add, len(nums))
    tmp = sums[right] - sums[left]
    res = max(tmp, res)


li, ri = bisect.bisect_left(p_ac, l[i]-1), bisect.bisect_right(p_ac, r[i]-1)    


org_list = [3, 1, 4, 5, 2]
new_list = sorted(org_list)
print(org_list)
print(new_list)




    for h in range(0,H):
        for w in range(0,W):
            if h == 0 and w == 0:
                pass
            elif h == 0:
                D[H-h-1][W-w-1]= min(D[H-h-1][W-w-1], D[H-h-1][W-w]+1)
            elif w == 0:   
                D[H-h-1][W-w-1]= min(D[H-h-1][W-w-1], D[H-h][W-w-1]+1)
            else:
                D[H-h-1][W-w-1]= min(D[H-h-1][W-w-1], D[H-h][W-w-1]+1, D[H-h-1][W-w]+1, D[H-h][W-w]+2)
            d_max = max(D[H-h-1][W-w-1], d_max)

"""


N=int(input())

    
def main(): 
    if N % 2 == 0:
        print(1/2)
    else:
        print((N//2+1)/(N))
        
                
                
                
            
            
                

    
if __name__ == '__main__':
    main()

Solution (Python):
N = int(input())

num = N // 2

if N % 2 == 1:
  num += 1

print( num / N )

Solution (Python):

import math
N = int(input())

print(math.ceil(N/2.0)/N)

Solution (Python):
n = int(input())
odd = []

for i in range(1, n+1):
    if i%2 != 0:
        odd.append(i)

odd_number = len(odd)
p = odd_number / n
print(p)

Solution (Python):
a = int(input())
if a % 2 ==0:
  print("0.5")
else:
  b = (a//2+1)/a
  print(b)

Solution (Python):
import math

n=int(input())
i=math.ceil(n/2)
print(i/n)

Solution (Python):
N = int(input())
if N % 2 == 0:
    print(0.5)
elif N == 1:
    print(1)
else :
    print(((N-1)/2 +1) /N)

Solution (Python):
n = int(input())
if n % 2 == 0:
    print(0.5000000000)
elif n == 1:
    print(1.0000000000)
else:
    print((n + 1) / (2 * n))

Solution (Python):
n = int(input())

if n%2 == 0:
  print(1/2)
elif n%2 == 1:
  print(((n+1)/2)/n)

Solution (Python):
n=int(input())
o=n-n//2
print(o/n)

Solution (Python):
N = int(input())
if N==1:
    print(1)
elif N % 2 == 0:
    print(0.5)
else:
    print(((N + 1) / 2) / N)

Solution (Python):
n = int(input())

if n==1:
  print(1)
elif n%2==0:
  print(0.5)
else:
  print((n+1)/(2*n))

Solution (Python):
N = int(input())
print(((N // 2) + (N % 2))  / N)

Solution (Python):
n=int(input())
if n%2==0:
  print(1/2)
else:
  print((n+1)/(2*n))

Solution (Python):
N = int(input())

oddCount = 0
for i in range(1,N+1):
	if i % 2 == 1:
		oddCount += 1
	
print(oddCount/N)

Solution (Python):
n = int(input())
if n == 1:
  print(1/1)
  exit()
if n%2 == 0:
  print(1/2)
else:
  print(1/(n/(n//2+1)))

Solution (Python):
N = int(input().strip())
if N % 2 == 0:
  print(0.5)
else:
  print((N+1)/2/N)

Solution (Python):
N=int(input())
if N%2==0:
  print((N/2)/N)
else:
  print(((N+1)/2)/N)

Solution (Python):
N = int(input())

if N % 2 == 0:
    print(0.5)
else:
    print(((N-1)/ 2 + 1 )/ N)

Solution (Python):
N = int(input())
print((N // 2) / N if N % 2 == 0 else (N // 2 + 1) / N)

Solution (Python):

a = int(input())
k=0
for i in range(1,a+1):
    if i%2==1:
        k+=1
print(k/a)

Solution (Python):
import sys
stdin = sys.stdin
mod = 10**9 + 7

ns = lambda: stdin.readline().rstrip()
ni = lambda: int(ns())
na = lambda: list(map(int, stdin.readline().split()))
sa = lambda h: [list(map(int, stdin.readline().split())) for i in range(h)]

n = ni()

print((n-n//2)/n)

Solution (Python):
n = int(input())
if n%2 == 1:
  print((n//2 +1) / n)
else:
  print((n//2) / n)

Solution (Python):
n = int(input())



if n% 2 == 0:
    print(0.500000)
elif n == 1:
    print(1.00000)
else:
    l = n // 2 + 1
    print(l/n)

Solution (Python):



N = int(input())


odd = 0
for i in range(1, N + 1):
    if i % 2 == 1:
        odd += 1


print(odd / N)

Solution (Python):
from math import ceil
N = int(input())
print(ceil(N/2)/N)

Solution (Python):
n = int(input())
if n%2:
   print((n//2 + 1)/n)
else:
  print((n/2)/n)

Solution (Python):
N = int(input())
print((N//2 + (1 if N % 2 == 1 else 0))/N)

Solution (Python):
x=int(input())

no=x//2
if(x%2==1):
    no+=1
print(no/x)

Solution (Python):
import math
n = int(input())

if n%2 == 0:
    print(1/2)

elif n==1:
    print(1)

else:
    print((math.ceil(n//2)+1)/n)

Solution (Python):
import math
def A():
    num = int(input())
    odd_nums = math.ceil(num/2.0)
    print(odd_nums/num)

A()

Solution (Python):
N = int(input())

if N%2 == 1:
  print(float((N+1)/2/N))
if N%2 == 0:
  print(float(1/2))

Solution (Python):
N=input()
N=int(N)
if N%2==0:
    print(0.5)
else:
    print((N+1)/2/N)

Solution (Python):
a = int(input())
if(a==1):
  print(1/a)
elif(a%2!=0):
  print((a-a//2)/a)
else:
  print(1/2)

Solution (Python):
import sys


def main():
    n = int(sys.stdin.readline().strip())
    if n % 2:
        print(((n + 1) // 2) / n)
    else:
        print(0.5)



main()

Solution (Python):
n = int(input())

odd = 0
for i in range(1,n+1):
  if i % 2 ==1:
    odd += 1
    
print(odd/n)

Solution (Python):
N=int(input())
if N%2==0:
  print((N/2)/N)
else:
  print(((N//2)+1)/N)

Solution (Python):
N = int(input())

if N % 2 :
    print((N + 1) / 2 / N)
else :
    print(0.5)

Solution (Python):
n = int(input())
o = n // 2
if n % 2 == 0:
  print(o / n)
else:
  print((o + 1) / n)

Solution (Python):
num = int(input())

cnt=0
for i in range(1,num+1):
    if i%2==1:
        cnt = cnt+1
    else:
        pass
ans = cnt/num
print(ans)

Solution (Python):
N = int(input())

print((N//2+N%2)/N)

Solution (Python):
n =int(input())
if n%2==0:
    print(1/2)
elif n==1:
    print(1)
else:
    a = (n-1)/2
    a +=1
    print(a/n)

Solution (Python):

def main():
    N = int(input())
    if N % 2 == 0:
        ans = (N/2)/N
    elif N % 2 == 1:
        ans = ((N+1)/2)/N
    print(ans)

if __name__ == '__main__':
    main()

Solution (Python):
N = int(input())
ans = 0
for i in range(1,N+1):
    if i%2==1: ans+=1
print(ans/N)

Solution (Python):
n=int(input())
if n%2 == 0:
    print(1/2)
else:
    print((n+1)/(2*n))

Solution (Python):
n = int(input())

count = 0
for i in range(n):
    if i % 2 == 0:
        count = count + 1
print(count/n)

Solution (Python):
A=int(input())
cnt=0
sum=0

for i in range(1,A+1):
  sum+=1
  if i%2==1:
    cnt+=1
    
print(cnt/sum)

Solution (Python):

N = int(input())
ans = -(-N // 2) / N
print(ans)

Solution (Python):
n = int(input())
if n % 2 == 0:
    print(1/2)
else:
    print(-(-n//2)/n)

Solution (Python):
a = int(input())
sum = 0
for i in range(1,a+1):
  if i%2==1:
    sum+=1
print(sum/a)

Solution (Python):
n=int(input())
if n%2==0:
    print((n//2)/n)
else:
    x=((n+1)//2)/n
    print(x)

Solution (Python):
N = int(input())

if N == 1:
  print(1)
elif N % 2 == 0:
  kisuu = int(N / 2)
  print(kisuu / N)
else:
  kisuu = int(N / 2) + 1
  print(kisuu / N)

Solution (Python):
n=int(input())
print((n-n//2)/n)

Solution (Python):
n = int(input())
if n%2 == 0:
    print((n/2)/n)
else:
    print((n//2+1)/n)

Solution (Python):
import sys


input = sys.stdin.readline


def main():
    N = int(input())
    print((N//2)/N if N % 2 == 0 else (N//2+1)/N)


if __name__ == '__main__':
    main()

Solution (Python):
N = int(input())

if N == 1:
    ans = 1.000000000
elif N%2 == 0:
    ans = 0.5
else:
    ans = (-(-N//2))/N

print(ans)

Solution (Python):
def solve():
    N = int(input())
    odd_num = int((N+1)/2)
    ans = float(odd_num/N)
    print(ans)

solve()

Solution (Python):
n=int(input())
a=n//2+n%2 
print(a/n)

Solution (Python):
N=int(input())
if N%2==0:
    print(N/2/N)
else:
    print((N//2+1)/N)

Solution (Python):
N = int(input())

import math

i = math.ceil(N/2)

print(i/N)

Solution (Python):
N = int(input().rstrip())
a = 0

for i in range(N+1):
  
  if (i % 2) == 1:
    a += 1

print(a/N)

Solution (Python):
N = float(input())

if N % 2 == 0:
    print("0.5")
else:
    e = N // 2
    
    print(float((e+1)/N))

Solution (Python):

num = int(input())
num2 = int(num / 2)

if num % 2 == 0:
  print(0.5000000)
else:
  print((num2+1) / num)

Solution (Python):
n = int(input())

kisuu = 0
for i in range(1, n+1):
    if i % 2 == 1:
        kisuu += 1

print(kisuu/n)

Solution (Python):
n = int(input())
if n % 2 == 0:
    print(0.5)
else:
    print((n // 2 + 1) / n)

Solution (Python):
N = int(input())
k = 0 if N % 2 == 0 else 1

print(((N // 2) + k) / N)

Solution (Python):
N = int(input())

if N % 2 == 0:
    Ans = 0.5
else:
    Ans = (N+1)/(2*N)
    
print(Ans)

Solution (Python):
n = int(input())
if n %2 == 0:
  print(1/2)
else:
  print((n+1)/2/n)

Solution (Python):

N = int(input())
ans = 0
for i in range(N):
    if i % 2 == 0:
        ans += 1

print(ans / N)

Solution (Python):
N = int(input())
if(N % 2 == 0):
    print(1/2)
else:
    ans = (N//2 + 1) / N
    print(ans)

Solution (Python):
N = int(input())
cnt = 0
for i in range(1,N+1):
  if (i%2 == 1) :
    cnt += 1
print(cnt/N)

Solution (Python):
N = int(input())

count = 0
for i in range(1,N+1):
    if i % 2 == 1:
        count += 1
print(count / N)

Solution (Python):
n = int(input());
ki = 0;
for i in range(1,n+1) :
	if i % 2 == 1 :
		ki += 1;

print(ki / n);

Solution (Python):
N=int(input())
if N%2==0:
 a=0.5
else:
 a=(N+1)/(2*N)
print(a)

Solution (Python):
N = int(input())						

k = (N+1)//2

print( k/N )

Solution (Python):
from collections import defaultdict
from collections import deque
from string import ascii_uppercase
import sys, bisect, math, heapq

stdin = sys.stdin
read_int = lambda : list(map(int,stdin.readline().split()))
read_str = lambda : stdin.readline().rstrip()

N = read_int()[0]

def solve():
    ans = 0
    return - (- N // 2) / N

if __name__ == "__main__":
    print(solve())

Solution (Python):
n = int(input())

ls = list(range(1, n+1))

g = ls[1::2]
k = ls[::2]

print(1 / (len(ls) / len(k)))

Solution (Python):
from math import ceil
N = int(input())
print(ceil(N/2) / N)

Solution (Python):


    


if __name__ == "__main__":
    Input1 = [input() for i in range(1)]
    N = int(Input1[0])
    

    if N % 2 == 0:
        print(0.5)
    elif N == 1:
        print(1.0)
    else:
        print((N//2+1)/N)

Solution (Python):
n = int(input())

a = (n + 1) // 2

r = a / n

print(r)

Solution (Python):


import sys

debug = False

def log(text):
    if debug:
        print(text)

def parse_input(lines_as_string = None):

    global debug
    lines = []
    if lines_as_string is None:
        debug = False
        
        
        lines.append(input())
    else:
        debug = True
        lines = [e for e in lines_as_string.split("\n")][1:-1]

    n = int(lines[0])

    return (n,)


def solve(n):

    result = 0.5
    if n % 2 == 1:
        odd = (n-1) / 2 + 1
        result = odd / n

    return result


def main():
    
    result = solve(*parse_input())
    if isinstance(result, list):
        for r in result:
            print("%s" % r, sep='')
    else:
        print("%s" % result, sep='')

if __name__ == '__main__':

    main()

Solution (Python):
n=int(input())
if n%2==0:
	print(0.5)
else:
	print(1-n//2/n)

Solution (Python):
N = int(input())
cnt = 0

for i in range(1,N+1):
    if i%2 != 0:
        cnt += 1
ans = cnt / N
print(ans)

Solution (Python):
a = int(input())
if a%2 == 0:
    print("0.5")
else:
    print((a//2+1)/a)

Solution (Python):
N=int(input())
if N%2==0:
  print(1/2)
else:
  print((N+1)/(2*N))

Solution (Python):
def main():
    N = int(input())

    if N % 2 == 0:
        print((N / 2) / N)
    else:
        print((N / 2 + 0.5) / N)


if __name__ == "__main__":
    main()

Solution (Python):
N = int(input())

if N % 2 == 0:
    print(0.5)
else:
    print((int(N/2)+1)/N)

Solution (Python):
N = int(input())
print((1+((N-1)/2))/N if N%2==1 else 1/2)

Solution (Python):
N = int(input())

if N%2 == 0:
    result = (N/2)/N

else:
    result = ((N+1)/2)/N

print(result)

Solution (Python):
n=int(input())
if n%2==0:
  print(0.5)
else:
  print(((n+1)/2)/n)

Solution (Python):
N = int(input())

if (N % 2) == 0:
    print(0.5) 
else:
    print((((N-1)/2)+1)/N)

Solution (Python):
n=int(input())
a = n //2
answer = (n - a)/n
print(answer)

Solution (Python):
N = int(input())

if N % 2 == 0:
    temp = N // 2
else:
    temp = N // 2 + 1

res = temp / N
print(res)

Solution (Python):
N = int(input())

print( int((N+1)/2)/N )

Solution (Python):
N = int(input())
odd = 0
for i in range(N):
  if ((i+1 )% 2) == 1:
    odd += 1
print(odd/N)

Solution (Python):
n=int(input())
i=1
count = 0
while i <= n:
    if i % 2 == 1:
        count+=1
    i+=1

print(count/n)

Solution (Python):
n = int(input())

print(((n+1)//2)/n)

Solution (Python):
n = int(input())

if n % 2 == 0:
  print(0.5)
else:
  print((n // 2 + 1) / n)

Solution (Python):
N=int(input())
if N % 2 == 0 :
    ans = 1/2
else:
    ans = ((N//2)+1) / N
print(ans)

Solution (Python):
N = int(input())
print(1-N//2/N)

Solution (Python):
a=int(input())
if a%2==0:
  print(1/2)
else:
  print((a//2+1)/a)

Solution (Python):
n = int(input())
if n % 2 == 0:
  print(0.5)
else:
  print((n // 2 + 1) / n)

Solution (Python):
N=int(input())
k=0.5
if N%2!=0:k=(N//2+1)/N
print(k)

Solution (Python):
N = int(input())
cnt = 0
for n in range(N + 1):
  if n % 2 != 0:
    cnt += 1
print(cnt / N)

Solution (Python):
N = int(input())
count = 0
for i in range(1,N+1):
    if i % 2 == 0:
        continue
    else:
        count += 1
print(count/N)

Solution (Python):
n = int(input())

if n == 1:
    print(1.0000000000)
elif n % 2 == 0:
    print(0.5000000000)
else:
    print((n // 2 + 1) / n)

Solution (Python):
n=int(input())
o=int(n/2)
if(n%2==1):
    o+=1

print(o/n)

Solution (Python):
a=int(input())
if a % 2 == 1:
  print((a+1)/2/a)
else:
  print(a/2/a)

Solution (Python):
n=int(input())
print(((n//2)+1)/n if n%2!=0 else (n//2)/n)

Solution (Python):
N = int(input())

if N%2 == 0:
    print(0.5)
else:
    print((N//2+1)/N)

Solution (Python):
import sys
import heapq
import bisect
import itertools

mod = 10**9+7
dd = ((-1,0),(1,0),(0,-1),(0,1))

def I(): return(int(sys.stdin.readline()))
def LI(): return([int(x) for x in sys.stdin.readline().split()])
def LI_(): return([int(x)-1 for x in sys.stdin.readline().split()])
def S(): return(sys.stdin.readline()[:-1])
def IR(n): return([I() for _ in range(n)])

def GCD(a,b):
    while b!=0:
        a,b = b,a%b
    return a

def LCM(a,b):
    return a * b // GCD(a,b)

def Eratosthenes(N):
    r = [True]*(N+1)
    r[0] = False
    r[1] = False
    i = 2
    while i*i<=N:
        if r[i]: 
            j = i
            while i*j<=N:
                prime[i*j]=False
                j+=1
        i+=1
    return(r)

def main():
    N = I()
    if N%2==0:
        return(0.5)
    else:
        return(((N+1)//2)/N)

if __name__ == "__main__":
    print(main())

Solution (Python):
import math
n = int(input())
print(1 if n==1 else math.ceil(n/2)/n)

Solution (Python):
n = int(input())

if n%2 == 0:
    print(0.5)
else:
    print(((n+1)/2)/n)

Solution (Python):
N = int(input())

print(1- ((N // 2) / N))

Solution (Python):
n = int(input())
even = 0
odd = 0

if(n % 2 == 1):
  odd = int(n/2 + 1)
else:
  odd = int(n/2)

even = n/2

print(odd / n)

Solution (Python):
n = int(input())
if n == 1:
    print(1)
elif n % 2 == 0:
    print(0.5)
else:
    print((n//2+1)/((n//2+1)+(n//2)))

Solution (Python):


a = int(input())
ans = 0

if a%2 == 1:
    ans = ((a//2) + 1) / a
else:
    ans = (a/2) / a

print(ans)

Solution (Python):

import string
import sys
from itertools import chain, dropwhile, takewhile

INF = float("inf")


def read(
    *shape, f=int, it=chain.from_iterable(sys.stdin), whitespaces=set(string.whitespace)
):
    def read_word():
        w = lambda c: c in whitespaces
        nw = lambda c: c not in whitespaces
        return f("".join(takewhile(nw, dropwhile(w, it))))

    if not shape:
        return read_word()
    elif len(shape) == 1:
        return [read_word() for _ in range(shape[0])]
    elif len(shape) == 2:
        return [[read_word() for _ in range(shape[1])] for _ in range(shape[0])]


def readi(*shape):
    return read(*shape)


def readi1(*shape):
    return [i - 1 for i in readi(*shape)]


def readf(*shape):
    return read(*shape, f=float)


def reads(*shape):
    return read(*shape, f=str)


def arr(*shape, fill_value=0):
    if len(shape) == 1:
        return [fill_value] * shape[0]
    elif len(shape) == 2:
        return [[fill_value] * shape[1] for _ in range(shape[0])]


def dbg(**kwargs):
    print(
        ", ".join("{} = {}".format(k, repr(v)) for k, v in kwargs.items()),
        file=sys.stderr,
    )


def main():
    n = readi()
    print(sum(i % 2 == 1 for i in range(1, n + 1)) / n)


if __name__ == "__main__":
    main()

Solution (Python):
n = int(input())

print((n+1)//2 / n)

Solution (Python):
n = int(input())

if (n%2):
    print((n//2 + 1)/n)
else:
    print((n//2) / n)

Solution (Python):
n = float(input())

if n %2 == 1:
  ans = n //2
  ans += 1
else:
  ans = n // 2
print(ans / n)

Solution (Python):
n = int(input())

ans = 0
if n == 1:
  ans = 1
else:
  if (n % 2) == 0:
    ans = 0.5
  else:
    ans = ((n // 2) + 1) / n

print(ans)

Solution (Python):
from collections import deque
import sys
sys.setrecursionlimit(10**7)
input = sys.stdin.readline

def isprime(n):
  for i in range(2,int(n**0.5)+1):
    if n%i == 0:
      return False
  return True


def solve():
  n = int(input())
  a = (n+1)//2
  print(a/n)
solve()

Solution (Python):
N = int(input())
print((N+1)//2 / N)

Solution (Python):
import sys
import math
from copy import deepcopy
from collections import deque, defaultdict
from operator import mul
from functools import reduce
sys.setrecursionlimit(20000000)




def main():
    n = int(input())

    if n % 2:
        print(((n - 1) / 2 + 1) / n)
        sys.exit()
    else:
        print(0.5)


if __name__ == '__main__':
    main()

Solution (Python):
a = int(input())
b = 0
for val in range(a):
    if (val+1)%2 != 0:
        b += 1
print(b/a)

Solution (Python):
n = int(input())
if n%2 == 0:
  print((n/2)/n)
else:
  print(((n//2)+1)/n)

Solution (Python):
n = int(input())

if n % 2 == 0:
    print(0.5)
elif n == 1:
    print(1.0)
else:
    print((n//2+1)/n)

Solution (Python):
N = int(input())
if N%2 == 0:
    print(0.5)
else:
    a = ((N+1)/2)/N
    print(a)

Solution (Python):
N = int(input())
odd = (N + 1) // 2
ans = odd / N
print(ans)

Solution (Python):
from sys import stdin

N = [int(x) for x in stdin.readline().rstrip().split()]
n = int(N[0])
if n % 2 == 0:
    print(0.5)
else:
    k = n // 2 + 1
    print(k/n)

Solution (Python):
N = int(input())
ans = 0
for i in range(1, N+1):
    if i % 2 == 0:
        continue
    else:
        ans += 1
print(ans/N)

Solution (Python):
N = int(input())

bunshi = 0
for i in range(1, N+1):
    if (i % 2) == 1:
        bunshi += 1
print(bunshi/N)

Solution (Python):
n = int(input())
if n%2==0:
  ans = 0.5
else:
  ans = (n+1)/2/n
print(ans)

Solution (Python):
n = int(input())
if n%2 == 0:
    print(1/2)
else:
    print((n//2+1)/n)

Solution (Python):


N = int(input())

if N%2 == 0:
    print(1/2)
elif N%2 == 1:
    print((N+1)/2/N)

Solution (Python):
n=int(input())


if n%2==0:
  x=n//2
else:
  x=n//2+1
print(x/n)

Solution (Python):
n = int(input())

cnt=0
for i in range(1, n+1):
  if i%2 == 1:
    cnt += 1

print(cnt/n)

Solution (Python):
N = int(input())
count = 0
for i in range(N):
  if((i+1)%2 == 1):
    count += 1
ans = count/N
print(ans)

Solution (Python):
N = int(input())
if N == 1:
    print(1)
elif N % 2 == 1:
    print(((N//2)+1)/N)
elif N % 2 == 0:
    print((N//2)/N)

Solution (Python):
n=int(input())
print((n-n//2)/n)

Solution (Python):
n = int(input())

if n == 1:
    print(1)
elif n == 2:
    print(0.5)
elif n % 2 == 0:
    print(0.5)
else:
    print(((n + 1) // 2) / n)

Solution (Python):
if __name__ == "__main__":
    a = int(input())
    count = 0
    for i in range(1, a+1):
        if i % 2 != 0:
            count += 1
    print(count / a)

Solution (Python):
n=int(input())
print((n//2+n%2)/n)

Solution (Python):


n = int(input())

print(((n // 2) + (n % 2)) / n)

Solution (Python):
n = int(input())
print((n//2 + n%2)/n)

Solution (Python):
import math
n=int(input())

if n%2==0:
    print(0.5)
else:
    print((math.floor(n/2)+1)/n)

Solution (Python):
n = int(input())
print((n + 1) // 2 / n)

Solution (Python):
number = int(input())
if number%2 ==0:
  child = number/2
elif number%2==1:
  child = (number+1)/2
value =child/number
print(value)

Solution (Python):
n = int(open(0).read())
if n%2 == 0:
    print(0.5)
else:
    print((n//2+1)/n)

Solution (Python):
N = int(input())

if N % 2 != 0:
    num = N // 2 + 1
else:
    num = N // 2

ans = num / N
print('{:.06f}'.format(ans))

Solution (Python):
n = int(input())

if n % 2 == 0:
    print(1/2)
else:
    print((n+1)/(2*n))

Solution (Python):
N = int(input())


print((N-N//2)/N)

Solution (Python):

import sys
sys.setrecursionlimit(200000)
input = sys.stdin.readline
def ii(): return int(input())
def mi(): return map(int, input().rstrip().split())
def lmi(): return list(map(int, input().rstrip().split()))
def fi(): return float(input())
def mfi(): return map(float, input().rstrip().split())
def lmfi(): return list(map(float, input().rstrip().split()))
def li(): return list(input().rstrip())
def debug(*args, sep=" ", end="\n"): print("debug:", *args, file=sys.stderr, sep=sep, end=end) if not __debug__ else None
def exit(*arg): print(*arg); sys.exit()



def main():
    N = ii()
    if N % 2 == 0:
        print(float(0.5))
    else:
        print(float((N // 2 + 1) / N))
    return


if __name__ == '__main__':
    main()

Solution (Python):
n=int(input())
if n%2==0:
    br=n//2
else:
    br=n//2 +1
print(br/n)

Solution (Python):
N = int(input())
if N%2 == 0:
    print(1/2)
else:
    print(((N+1)//2)/N)

Solution (Python):
n=int(input())
if n % 2 == 0:
    print(0.5)
else:
    print((n+1)/2/n)

Solution (Python):
n = int(input())

even = n // 2

prob = (n - even) / n

print(prob)

Solution (Python):
n=int(input())
k=0
for i in range(n+1):
	if i%2==1:
		k=k+1

result=k/n

print(result)

Solution (Python):
def myinput(rownum):
    res = []
    for i in range(rownum):
        temp = input().split(" ")
        res += temp
    return res

def main():
    r = int(myinput(1)[0])
    if r == 1:
        print(1)
    elif r % 2 == 0:
        print(0.5)
    else:
        print((int(r/2)+1)/r)

if __name__ == '__main__':
    main()

Solution (Python):
n=int(input())
con=0
for i in range(1,n+1):
  if i%2!=0:
    con+=1
res=con/n
print(res)

Solution (Python):
N = int(input())
if N % 2 == 0:
    print(1 / 2)
else:
    print((N // 2 + 1) / N)

Solution (Python):
n = int(input())
if n % 2 == 0:
    print(1. / 2.)
else:
    print((n // 2 + 1) / n)

Solution (Python):
n=int(input())
odd=(n+1)//2
print(odd/n)

Solution (Python):
import math

n = int(input())
kisuu = math.ceil(n/2)
print(kisuu/n)

Solution (Python):
import math
n = float(input())
print(math.floor((n+1)/2)/n)

Solution (Python):
a=int(input())
if a%2==0:
    print(0.5)
else:
    print(1-(a-1)/2/a)

Solution (Python):
n = int(input())
odd = 0
for i in range(1, n+1):
    odd += i % 2 != 0

print(odd / n)

Solution (Python):
n=int(input())
count=0
for i in range(1,n+1):
    if i%2==1:
        count+=1
print(count/n)

Solution (Python):
N = int(input())

if N % 2 == 0:
    print((N/2)/N)
else:
    print((N//2+1)/N)

Solution (Python):
ｎ = int(input())
if n == 1:
    print(1)
    exit()
print(((n//2) + (n % 2)) / n)

Solution (Python):
N=int(input())
if N%2==0 :
	p=1/2
else :
	p=(N+1)/(2*N)
print(p)

Solution (Python):
N = int(input())

if N % 2 == 0:
    print((N//2)/N)
else:
    print((N//2+1)/N)

Solution (Python):
n = int(input())

if n % 2 == 1:
    print( (n+1)/2/n )
else:
    print(1/2)

Solution (Python):
a = int(input())
print(0.5 if a % 2 == 0 else (a + 1) / (2 * a))

Solution (Python):
N=int(input())
if N%2==0:
    print(float(2/4))
else:
    print(float((N+1)/2/N))

Solution (Python):
def main():
    N = int(input())
    odd = 0
    for i in range(1,N+1):
        if i % 2 == 1:
            odd += 1
    print(odd / N)

if __name__ == "__main__":
    main()

Solution (Python):
n = int(input())
if n%2 == 1:
    ans = (int(n/2)+1)/n
else:
    ans = (int(n/2))/n
print(ans)

Solution (Python):
from collections import defaultdict, deque, Counter
from heapq import heappush, heappop, heapify
import math
import bisect
import random
from itertools import permutations, accumulate, combinations, product
import sys
import string
from bisect import bisect_left, bisect_right
from math import factorial, ceil, floor
from operator import mul
from functools import reduce
from pprint import pprint
sys.setrecursionlimit(2147483647)


INF = float('inf')
def LI(): return list(map(int, sys.stdin.readline().split()))
def I(): return int(sys.stdin.readline())
def LS(): return sys.stdin.readline().split()
def S(): return sys.stdin.readline().strip()
def IR(n): return [I() for i in range(n)]
def LIR(n): return [LI() for i in range(n)]
def SR(n): return [S() for i in range(n)]
def LSR(n): return [LS() for i in range(n)]
def SRL(n): return [list(S()) for i in range(n)]
def MSRL(n): return [[int(j) for j in list(S())] for i in range(n)]
mod = 1000000007



from collections import defaultdict, deque, Counter
from heapq import heappush, heappop, heapify
import math
import bisect
import random
from itertools import permutations, accumulate, combinations, product
import sys
import string
from bisect import bisect_left, bisect_right
from math import factorial, ceil, floor
from operator import mul
from functools import reduce


INF = float('inf')
def LI(): return list(map(int, sys.stdin.readline().split()))
def I(): return int(sys.stdin.readline())
def LS(): return sys.stdin.readline().split()
def S(): return sys.stdin.readline().strip()
def IR(n): return [I() for i in range(n)]
def LIR(n): return [LI() for i in range(n)]
def SR(n): return [S() for i in range(n)]
def LSR(n): return [LS() for i in range(n)]
def SRL(n): return [list(S()) for i in range(n)]
def MSRL(n): return [[int(j) for j in list(S())] for i in range(n)]
mod = 1000000007

n = I()

print(len([i for i in range(1, n + 1) if i % 2]) / n)

Solution (Python):
N = int(input())

if N % 2 == 1:
  print(1 - (N//2)/N)
else:
  print(0.5)

Solution (Python):
n = int(input())

a = 1 - (n//2)/n
print(a)

Solution (Python):

N = int(input())
if N % 2 == 0:
    A = 1*0.5000000
    print(A)
else:
    B = (N/2)-0.5
    A = (N-B)/N
    print(A)