#include <stdio.h>
#include <stdlib.h>

typedef struct{
	int data[100];
	int top;
}SqStack;

void InitStack(SqStack &S)
{
	S.top = -1;
}

void Binary(SqStack &S,int n)
{
	while(n)
	{
		S.data[++S.top] = n%2;
		n/=2;
	}
}

void Print(SqStack &S)
{
	while(S.top > -1)
		printf("%d",S.data[S.top--]);
}

int main()
{
	SqStack S;
	InitStack(S);
	int n;
	scanf("%d",&n);
	Binary(S,n);
	Print(S);
	return 0;
}