#27791: _CPP
11030067@mail.hpsh.tp.edu.tw
(和平110級鄧雨珊)
#include <iostream>
using namespace std;
int main(){
int n, a[50];
while (cin >> n){
int c=0;
while (n>0){
a[c]=n%2;
n/=2;
c++;
}
for (int i=c-1; i>=0; i--){
cout << a[i];
}
cout <<endl;
}
}