#include<stdio.h>

int l,l2,m,n,a[501][501],i,j,k,marc;


int main(){

FILE *f=fopen("piese.in","r");
fscanf(f,"%d %d",&n,&m);
fclose(f);

  for(i=1;i<=n;i++){
    for(j=1;j<=m;j++){

      if(a[i][j]==0){
      marc++;
	 for(k=1;k+i-1<=n&&k+j-1<=m;k*=2);


	 k/=2;


	   for(l=i;l<i+k;l++){
	      for(l2=j;l2<j+k;l2++){
	      a[l][l2]=marc;
	      }
	   }



      }

    }
  }


FILE *g=fopen("piese.out","w");

 fprintf(g,"%d\n",marc);

 for(i=1;i<=n;i++){
   for(j=1;j<=m;j++){
   fprintf(g,"%d ",a[i][j]);
   }
 fprintf(g,"\n");
 }


fclose(g);


return 0;
}