#include 
   
   
    
    
#include 
    
    
     
     
#include 
     
     
      
      
using namespace std;

class Perfect_Number
{
public:
    bool operator() (int v)
    {
        int sum = 0;//用来存储当前正整数的真因子
        for (int i = 1; i < v; i++) {
            if ((v % i) == 0)//若为其真因子
                sum += i;
        }
        if (sum == v)
            return true;
        else
            return false;
    }
};
int main()
{
    vector
      
      
       
        v;
    int x;
    while (cin >> x)
        v.push_back(x);
    int count = count_if(v.begin(), v.end(), Perfect_Number());//STL算法
    cout << count << endl;
    if(count==0)
        cout << "none" <
       
       
         ::iterator first = find_if(v.begin(), v.end(), Perfect_Number()); cout << first-v.begin()+1 << " " << *first << endl; } return 0; }