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