//IN THE NAME OF GOD

#include <iostream>
using namespace std;
int process(long long x) {
  int y = 0;
  if (x % 2) return -1;
  for (x = x / 2; x > 1; x = x / 2) {
    int b = (x + 1) % 2;
    y*=2;
    y += b;
  }
  return y;
}

int main() {
  long long alpha=1,del=10739; 
	del*=del;
  while(process(alpha)!=del)
  	alpha++;
  cout<<alpha<<endl;
  return 0;
}