/*
Author : Gurpreet
Purpose: To convert large decimal numbers to their binary numbers.
*/

#include<stdio.h>
#define MAX_DIGITS 100
int main()
{
	int num, bin[MAX_DIGITS], digits=0, i;
	//printf("Enter a number: ");
	scanf("%d", &num);
	do
	{
		bin[digits++]=num%2;
	}
	while(num/=2);
	for(i=digits-1; i>=0; i--)
	{
		printf("%d", bin[i]);
	}
	printf("\n");
	return 0;
}