import math

e = input("Suply and even number: ")
print math.floor(e/2+1)

def isPrime(e):
    for i in range(1,int(math.floor(e/2+1))):
        for j in range(1,i+1):
            if j*i == e:
                return False
    return True

def findPrimes(e):
    primes = []
    for i in range(1,e+1):
        if isPrime(i):
            primes.append(i)
    return primes

def findPrimeSummands(e):
    primes = findPrimes(e)
    for i in primes:
        for j in primes:
            if i+j == e:
                return i,j
    return "No Solution"

print(findPrimeSummands(e))