不是哥们，这输出提示没空格啊

吐槽一下：
Goldbach's conjecture is wrong.
题目里写成了Goldbach′sconjectureiswrong.

正文开始：

#include<bits/stdc++.h>
using namespace std;
bool check(int x){
    if(x < 2) return false;
    for(int i = 2;i <= x / 2;i++){
        if(x % i == 0) return false;
    }
    return true;
}
int f(int n){
    for(int i = 3;i <= n / 2;i += 2){
        if(check(i) && check(n - i)) return i;
    }
}
int main(){
    int n;
    while(cin >> n){
        if(n == 0) exit(0);
        if(n < 6 || n % 2 == 1) cout << "Goldbach's conjecture is wrong.\n";
        else cout << n << " = " << f(n) << " + " << n - f(n) << "\n";
    }
}