#include <iostream>

using namespace std;

void constr(int &n, int &m, int a[101][101])
{
    int i, j, x=1;
    cout<<"m = ";
    cin>>m;
    cout<<"n = ";
    cin>>n;
    for(i=1; i<=m; i++)
    {
        if(i%2!=0)
            for(j=1; j<=n; j++)
            {
                a[i][j]=x;
                x++;
            }
        else
            for(j=n; j>=1; j--)
            {
                a[i][j]=x;
                x++;
            }
    }
}

void afis(int n, int m, int a[101][101])
{
    int i, j;
    for(i=1; i<=m; i++)
    {
        for(j=1; j<=n; j++)
            cout<<a[i][j]<<" ";
        cout<<endl;
    }
}

int main()
{
    int m, n, a[101][101];
    constr(n, m, a);
    cout<<endl;
    afis(n, m, a);
    return 0;
}