#include<iostream>

using namespace std;

void main()

{

   int n,i,j=;

   int a[];

   cin>>n;

   i=n;

   while(i)

   {

    a[j]=i%;

    i/=;

    j++;

   }

   for(i=j-;i>=;i--)

    cout<<a[i];

   cout<<endl;

}