#include <iostream>
#include <cmath>
using namespace std;

int main ()
{
 int v[1000],n,i,x=0,inv=0;
 cout<<"n=";cin>>n;
 while (n)
 {
     inv=inv*10+n%10;
     n/=10;
 }
 while (inv)
 {
     v[x]=inv%10;
     x++;
     inv/=10;
 }
  cout<<v[0];
  for (i=1;i<x;i++)
  {
     cout<<abs(v[i-1]-v[i]);
      cout<<v[i];
  }
    return 0;
}