题解 | #查找组成一个偶数最接近的两个素数#

n = eval(input())
a = 0
flag = 0
for i in range(n//2,0,-1):
    for j in range(i,0,-1):
        factor = []
        for z in range(j,1,-1):
            if j%z == 0:
                factor.append(z)
        if len(factor) == 1:
            a = j
            b = n - a
            factor1 = []
            for k in range(b,1,-1):
                if b%k == 0:
                    factor1.append(k)
            if len(factor1) == 1:
                flag = 1
                print(a)
                print(b)
            break
    if flag == 1:
        break