#include<bits/stdc++.h> using namespace std; int a; int main() { cin>>a; int x[32],j = 0; if (a == 0){ cout<<0; return 0; } while(a != 0){ int yu = a % 2; x[j] = yu; j++; a = a / 2; } for (int i = j - 1;i >= 0;i--){ cout<<x[i]; } return 0; }