C++ :

#include<bits/stdc++.h>
using namespace std;
int a[21][21]; 
int main(){
   int n,s,i,j;
   cin>>n>>s;
   for(j=1;j<=n;j++){
        for(i=1;i<=j;i++){
            a[i][j] = s;
            s++;
            if(s==10) s=1;
        }
   }
    
   for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            if(j>=i){
                cout<<a[i][j];
                if(j!=n) cout<<" "; 
            }else{
                cout<<"  ";   
            }
        }
        cout<<endl;
   }
    return 0;
}