#include <iostream>
using namespace std;

int main()
{
    int n;
    cin >> n;
    int mina;
    int imin;
    int sum = 0;
    int a;
    bool flag = false;
    for(int i = 0; i < n; i++){
        cin >> a;
        if(a % 2 == 0){
            if(!flag) {
                mina = a;
                imin = i + 1;
            }
            flag = true;
            sum += a;
            if(a < mina){
                mina = a;
                imin = i + 1;
            }
        }
    }
    if(flag) cout << sum << " " << mina << " " << imin;
        else cout << "No chetnih";

    return 0;
}