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#include <fstream>
using namespace std;
int v[24], a[503][503], i, j, x, ii, jj, n, m, nr;
int main()
{
ifstream fin ("piese.in");
ofstream fout("piese.out");
v[0]=1;
for(i=1;i<=23;i++)
v[i]=v[i-1]*2;
nr=1;
fin>>n>>m;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++){
if(a[i][j]==0){
x=0;
while(i+v[x]-1<=n && j+v[x]-1<=m)
x++;
x--;
for(ii=i;ii<=v[x]+i-1;ii++)
for(jj=j;jj<=v[x]+j-1;jj++)
a[ii][jj]=nr;
nr++;
}
}
fout<<nr-1<<"\n";
for(i=1;i<=n;i++){
for(j=1;j<=m;j++)
fout<<a[i][j]<<" ";
fout<<"\n";
}
return 0;
}