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#include <bits/stdc++.h>
using namespace std;
ifstream fin("piese.in");
ofstream fout("piese.out");
typedef int matrice[501][501];
matrice a;
int n,m,i,j,pr,f;
int lg[501];
void umple(int pr, int x, int y, int pt)
{
int i,j;
for(i=x;i<=x+pt-1;i++)
for(j=y;j<=y+pt-1;j++)a[i][j]=pr;
}
int main()
{
fin>>n>>m;
for(i=2;i<=max(n,m);i++)lg[i]=1+lg[i/2];
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
if(!a[i][j])
{
pr++;
f=min(n-i+1,m-j+1);
umple(pr,i,j,(1<<lg[f]));
}
fout<<pr<<"\n";
for(i=1;i<=n;i++)
{
for(j=1;j<=m;j++)fout<<a[i][j]<<" ";
fout<<"\n";
}
return 0;
}