题解 | #查找组成一个偶数最接近的两个素数#

# 20240919
def f(x): #判断x是否是素数
    for i in range(2,int(x**0.5)+1):
        if x%i == 0:
            return False
    return True


n = int(input()) # n>2
min = n
for i in range(2,n//2+1):
    if f(i) and f(n-i):
        if abs(n-i-i) < min:
            min = n-i-i
            a = i
            b = n-i
print(a)
print(b)