这个代码十个甚至九个AC

#include <bits/stdc++.h>
#define ikun for
#define chang if
#define tiao return
#define rap int
#define music break
#define niganma___ printf
#define nishiwodenishiwodeshei cin
using namespace std;
bool kun(rap n){
	chang(n<2)	tiao false;
	ikun (rap i=2;i<=n/i;i++){
		chang(n%i==0)	tiao false;
	}
	tiao true;
}
int main(){
	long long n;
	nishiwodenishiwodeshei>>n;
	ikun(rap j=4;j<=n;j+=2){
		ikun(rap i=2;i<=j-2;i++){
			chang (kun(i)==1 && kun(j-i)==1){
				niganma___("%d=%d+%d\n",j,i,j-i);
				music;
			}
		}
	}
	
	tiao 0;
}