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#include<fstream>
using namespace std;
ifstream fin("piese.in");
ofstream fout("piese.out");
int n,m,i,j,l,sol,ii,jj;
int a[501][501];
int main(){
fin>>n>>m;
for(i=1;i<=n;i++){
for(j=1;j<=m;j++){
if(a[i][j]==0){
l=1;
while(i+l-1<=n && j+l-1<=m)
l*=2;
l/=2;
sol++;
for(ii=i;ii<=i+l-1;ii++)
for(jj=j;jj<=j+l-1;jj++)
a[ii][jj]=sol;
}
}
}
fout<<sol<<"\n";
for(i=1;i<=n;i++){
for(j=1;j<=m;j++)
fout<<a[i][j]<<" ";
fout<<"\n";
}
return 0;
}