using namespace std;
int main()
{
    int n,ch,s,a[n];
    cout<<"n =";
    cin>>n;
    for (s=0;s<n;s++){
        cout<<"a["<<s<<"]= ";
        cin>>ch;
        a[s]=ch;
      }
    int m=a[0];
    for (int i=1;i<n;i++){
        if (a[i]>m){
            m=a[i];
        }
    }
    int b[m+1];
    for (int i=0;i<m+1;i++){
        b[i]=0;
    }
    for (int i=0;i<n;i++){
        int ind=a[i];
        b[ind]+=1;
    }
    int c[100],q;
    for(int j=0;j<m+1;j++){
        for(int k=0,q=0;k<b[j] && q<n;k++,q++){
          c[q]=j;
          cout<<c[q];
        }
    }
}