#include <bits/stdc++.h>
using namespace std;
bool sushu(int n)
{
    bool r = true;//函数名
    for(int i = 2;i<=sqrt(n);i++)
    {
        if(n%i==0)
        {
            r = false;
            break；//定义类型的函数；
        }
    }
    if (n <= 1 )
    {
        r = false;
    }
    return r;
    }
int main ()
{
    int a,b;
    for(a=2;a<=100;a++){
        for(b=a+1;b<=100;b++){
            if(sushu(a)&&sushu(b)&&sushu((a+b)/2)&& (a+b)%2==0){
                cout<<a<<" "<<(a+b)/2<<" "<<b<<endl;
            }
        }
              
    }
 
    return 0;
}
/**************************************************************
	Problem: 1144
	User: fuyijun
	Language: C++
	Result: Compile Error
****************************************************************/