#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,a[999],s=0;
	cin>>n;
	while(n!=0){
		a[s++]=n%2;
		n/=2;
	}
	for(int i=s-1;i>=0;i--){
		cout<<a[i];
	}
	return 0;
}

/**************************************************************
	Problem: 1108
	User: zzz
	Language: C++
	Result: Wrong Answer
****************************************************************/