#include<conio.h> \\\/// All rights reserved ///\\\
#include<stdio.h>
//#include <iostream.h>
int main()
{
int j,a,i,b[10]={0};
scanf("%d",&a);
for(i=0;a;i++)
{
b[i]=a%2;
a/=2;
}
for(j=i-1;j>=0;j--)
printf("%d",b[j]);
}