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#include<fstream>
using namespace std;
ifstream fin("piese.in");
ofstream fout("piese.out");
int m,n,i,j,p,k,ii,jj;
int a[510][510];
int main(){
fin>>n>>m;
for(i=1 ; i <= n ; i++){
for(j=1 ; j <= m ; j++){
if(a[i][j] == 0){
p=1;
while(i+p-1 <= n && j+p-1 <= m){
p*=2;
}
p/=2;
k++;
for(ii=i ; ii <= i+p-1 ; ii++){
for(jj = j ; jj <= j+p-1 ; jj++){
a[ii][jj]=k;
}
}
}
}
}
fout<<k<<"\n";
for(i=1;i<=n ;i++){
for(j=1;j<=m;j++){
fout<<a[i][j]<<" ";
}
fout<<"\n";
}
return 0;
}