题解 | 查找组成一个偶数最接近的两个素数

from re import T
import sys

n = int(input())
s = set()

def su(n):
    for i in range(2,n//2):
        if n % i == 0:
            return False
    return True
for i in range(n):
    if su(i):
        s.add(i)
        if n-i in s:
            print(n-i)
            print(i)
            break