#include <stdio.h>

#include <sstream>

#include <iostream>

using namespace std;

string intToChar(int number) {

ostringstream oss;

oss << number;

return oss.str();

}

int main() {

int cinNumber;

while (cin >> cinNumber) {

string mergerString = "";

do {

if (cinNumber / 2 > 0) {

mergerString = intToChar(cinNumber % 2) + mergerString;

cinNumber = cinNumber / 2;

}

else {

mergerString = intToChar(cinNumber) + mergerString;

cinNumber = 0;

}

}

while (cinNumber > 0);

cout << mergerString << endl;

}

return 0;

}

:D