#include <stdio.h>
#include <string.h>
#include <math.h>

void BinaryString(int iVal) {
  int i = 0;
  int bin = 0;
  int cas = 0;
  while (iVal != 0) {
    int x = iVal & 1;
    bin += (x * pow(10, cas));
    cas++;
    iVal = iVal >> 1;
    i++;
  }
  printf("%d\n", bin);
}

int main(void) {
   int integerValue;
   scanf("%d", &integerValue);
   BinaryString(integerValue);
   return 0;
}