//program to check whether a number is an armstrong number or not
#include<iostream.h>
#include<Math.h>
int main()
{
  int n,k,d,s=0;
  cout<<"Enter a number:";
  cin>>n;
  k=n;
  while(k!=0)
  {
    d=k%10;
    s+=(int)pow(d,3);
    k/=10;
  }
  if(s==n)
   cout<<n<<"is an armstrong number";
  else
   cout<<n<<"is not an armstrong number";
}