#include <stdio.h>

int main(void) {
	// your code goes here
int a=0,n,i,data[32];
 scanf("%d",&n);
 for(i=n; i>=1; i/=2){ 
 data[a]=n%2;
 a=a+1;
 n=n/2;}
  for(i=a-1; i>=0; i--)
  printf("%d",data[i]);
   
return 0;
}