Lang:G++
Edit12345678910111213141516171819202122232425262728293031#include<iostream>#include<stdio.h>#include <math.h>#include<iomanip>using namespace std;bool ifprime(int n){for (int i = 2;i <= sqrt(n);i++){if (n%i == 0){return 0;}}return 1;}int main(){int sum;cin >> sum;for (int i = 2;i <= sum / 2;i++){if (ifprime(i) == 1 && ifprime(sum-i) == 1){cout << i << " " << sum - i << endl;break;}}