#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>
#include <queue>
#include <map>
#include <set>
#include <bitset>

using namespace std;

typedef long long ll;

struct bf{
    int v, u, c;
};

int main() {
    int a, b, v, u, c;
    cin >> a >> b;
    int rx = a;
    int ry = b;
    map<pair<int, int>, int> m;
    queue<bf> q;
    q.push({0, 0, 0});
    vector<pair<int, int>> move = {{-1, 2}, {-1, -2}, {1, 2}, {1, -2},{2, -1}, {2, 1}, {-2, -1}, {-2, 1}};
    while(v != a || u != b){
        v = q.front().v;
        u = q.front().u;
        c = q.front().c;
        q.pop();
        for(int i = 0; i < 8; ++i){
            if(!m.count({v + move[i].first, u + move[i].second}) && v + move[i].first - a - (v - a) < 2 /*&& u + move[i].second - b - (u - b) < 2*/){
                m[{v + move[i].first, u + move[i].second}] = c + 1;
                q.push({v + move[i].first, u + move[i].second, c + 1});
            }
        }
    }
    c = 1e9;
    vector<pair<int, int>> ans;
    while(a != 0 || b != 0){
        int x = 0;
        int y = 0;
        for(int i = 0; i < 8; ++i){
            if(m[{a + move[i].first, b + move[i].second}] > 0 && m[{a + move[i].first, b + move[i].second}] < c){
                x = a + move[i].first;
                y = b + move[i].second;
                c = m[{a + move[i].first, b + move[i].second}];
            }
        }
        a = x;
        b = y;
        ans.push_back({a, b});
    }
    for(int i = 1; i < ans.size(); ++i){
        cout << ans[ans.size() - i - 1].first << " " << ans[ans.size() - i - 1].second << "\n";
    }
    cout << rx << " " << ry << "\n";
}