# include<iostream.h>
# include<conio.h>
void main()
{
 int i,j,n;
 clrscr();
 cout<<"Enter value :";
 cin>>n;
 for(i=1; i<=n; i++)
 {
  for(j=1; j<=i; j++)
  {
   cout<<j;
  }
  cout<<endl;
 }
 getch();
}