#include<bits/stdc++.h> using namespace std; int a[100]; int main(){ long long x,i = 0; cin >> x; if(x == 0){ cout << 0; return 0; } while(x > 0){ a[i] = x % 2; x = x / 2; i++; } while(i--){ cout <<a[i]; } return 0; }