#include<iostream>
#include<math.h>
using namespace std;
int main(){
    int n, tmp, taille=0, res=0;
    cout<<"please give a value for n"<<endl;
    cin>>n;
    tmp=n;
    while(tmp!=0){
        taille++;
        tmp/=10;
    }
    tmp=n;
    while(tmp){
        res+=pow(tmp%10,taille);
        tmp/=10;
    }
    if(n==res)
    cout<<n <<" is a digital invariant number"<<endl;
    else
    cout<<n <<" is not a digital invariant number"<<endl;
    return 0;
 
}

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