9bac 41

#include <iostream>

using namespace std;

int main() {

 unsigned k,i;

 cout<<"k=";cin>>k;
 for (i=1;i<=9;i++)
 {
     if (i-k>=0)
        cout<<i<<i-k<<i<<i-k<<i<<" ";
      if (i-2*k>=0&&i-k>=0)
     cout<<i<<i-k<<i-2*k<<i-k<<i<<" ";
     if (i+k<=9)
     cout<<i<<i+k<<i<<i+k<<i<<" ";
     if (i+2*k<=9&&i+k<=9)
     cout<<i<<i+k<<i+2*k<<i+k<<i<<" ";

 }

 return 0;
}