#include <stdio.h>
int main()
{
int Arr[101][101] = {};
int n,m,k=1;
scanf("%d %d", &n,&m);
for(int j = 1; j<=m; j++)
{
if(j%2!=0)
{
for(int i = n; i >=1; i--)
{
Arr[i][j] = k;
k++;
}
}
else{
for(int i=n;i>=1;i--){
Arr[i][j]=k;
k++;
}
}
}
for(int i = 1; i <=n; i++)
{
for(int j = m; j>=1; j--)
{
printf("%d ",Arr[i][j]);
}
printf("\n");
}
return 0;
}