#include <iostream>
using namespace std;
 
int main() {
    int width, height;
    int states[][2] = {{0, -1}, {1, 0}, {0, 1}, {-1, 0}};
    cin >> width >> height;
    cout << '\n';
    int peaks[] = {0, 0, height, width};
    int pos[] = {0, width-1};
    int state = 0;
    while (true) {
        if (peaks[0] == peaks[2] || peaks[1] == peaks[3]) {
            break;
        }
        cout << pos[1] << ' ';
        int tpos[] = {pos[0] + states[state][0], pos[1] + states[state][1]};
        if (tpos[0] < peaks[0] || tpos[0] == peaks[2] || tpos[1] < peaks[1] || tpos[1] == peaks[3]) {
            peaks[state] += states[state][0] - states[state][1];
            state = (state + 1) % 4;
            cout << '\n';
            continue;
        }
        pos[0] = tpos[0];
        pos[1] = tpos[1];
    }
    cout << '\n';
}
 

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