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