CF743C Vladik and fractions 裂项

这题，好骚啊 

code:

#include <iostream> 
using namespace std; 
int main() 
{
    int n; 
    cin>>n;    
    if(n==1) cout<<-1<<endl; 
    else 
    {
        cout<<n<<" "<<n+1<<" "<<n*(n+1)<<endl; 
    } 
    return 0; 
}