#include <bits/stdc++.h>

#define pb push_back
#define F first
#define S second
#define ll long long
#define ld long double
#define null NULL
//#define endl '\n'

using namespace std;

mt19937 gen(chrono::system_clock::now().time_since_epoch().count());

const int M = 1e9 + 7;
const int N = 1e6 + 7;

int n, m, k = 2, x, y;
bool f[30][30], fl = 0;

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
#ifdef LOCAL
//    freopen("input.txt", "r", stdin);
//    freopen("output.txt", "w", stdout);
#else
//    freopen("relatives.in", "r", stdin);
//    freopen("relatives.out", "w", stdout);
#endif
    cin >> n >> m;
    f[1][1] = 1;
    f[n][m] = 1;
    cout << "2 1" << endl;
    while (1){
        cin >> x >> y;
        f[x][y] = 1;
        if (k == 2 && x == 2 && y == 2){
            fl = 1;
            cout << "1 2" << endl;
            cout << "x_X" << endl;
            return 0;
        }
        if (fl){
            cout << "x_X" << endl;
            return 0;
        }
        if (!f[1][k - 1]){
            cout << "1 " << k - 1 << endl;
            f[1][k - 1] = 1;
            fl = 1;
            cout << "x_X" << endl;
            return 0;
        }
        else if (!f[2][k]){
            cout << "2 " << k << endl;
            f[2][k] = 1;
            if (k == m){
                fl = 1;
                cout << "x_X" << endl;
                return 0;
            }
            else k++;
        }
    }
    return 0;
}