#include<bits/stdc++.h>
using namespace std;

int main(){
	
	int num;
	while(scanf("%d", &num) != EOF){
		char out[105];
		int cnt = 0;
		
	    while(num > 0){
			int w = (num%2);
			out[cnt++] = w + '0';
			num /= 2;
		}
		
		for(int i = cnt - 1; i >= 0; i--){
			cout << out[i];
		}
		cout << endl;
	}
	
	return 0;
}