#include <stdio.h>
#include <stdlib.h>

int m[1000][1000];

int main()
{
    int n,k,nr=1,i,j,q;
    FILE*fi,*fo;
    fi=fopen("tablete.in","r");
    fo=fopen("tablete.out","w");
    fscanf(fi,"%d%d",&n,&k);
    k--;
    printf("%d",n);
    for(i=0; i<n;i=i+2)
        for(j=0; j<n; j++)
        {
            if(j+1==k)
            {
                m[i][j]=nr;
                m[i+1][j]=nr+2;
                nr++;
            }
            else if(j==k)
            {
                m[i][j]=nr;
                m[i+1][j]=nr+2;
                nr+=3;
            }
            else
            {
                m[i][j]=nr;
                m[i+1][j]=nr+1;
                nr+=2;
            }
        }
    for(i=0; i<n; i++)
    {
        for(j=0; j<n; j++)
            fprintf(fo,"%d ",m[i][j]);
        fprintf(fo,"\n");
    }
    fclose(fi);
    fclose(fo);
    return 0;
}