#include<stdio.h>
#define N 10
void f(){
int a[N][N];
int i,j,m,n,count=1;
scanf("%d",&n);
scanf("%d",&m);
for(i=0;i<n;i++){
if(i%2==0){
for(j=0;j<m;j++){
a[i][j]=count;
count++;}
}
if(i%2!=0){
for(j=m-1;j>=0;j--){
a[i][j]=count;
count++;}
}
}
for(i=0;i<n;i++)
for(j=0;j<m;j++){
printf("%d ",a[i][j]);
if(j%m==m-1)
printf("\n");}
}
int main(){
f();
return 0;
}
