#include <iostream>
using namespace std;

int X, Y, t;

int main() {
    cin >> X >> Y;
    cout << 4 << endl;
    for (int i = 0; i < 4; i++)
        cout << ((i == 0) ? X : Y) << (i == 3 ? "\n" : " ");
    cout << flush;
    cin >> t;
    cout << t << endl;
    cout << flush;
    return 0;
}