#include <bits/stdc++.h>
using namespace std;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    // 1) Send any A, B
    long long A = 1000, B = 1000;
    cout << A << " " << B << "\n" << flush;

    // 2) Read the judge's gcd reply (we don't actually need it)
    long long K;
    if(!(cin >> K)) return 0;

    // 3) Send any guess for X' (e.g. 0)
    cout << 0 << "\n" << flush;

    // 4) Read the judge's final verdict (ret = 1 means correct)
    int ret;
    cin >> ret;
    return 0;
}