#include <iostream> #include <cstring> #include <cmath> using namespace std; int main(){ int str,a[1001],i=0; cin>>str; if(str==0) cout<<0; while(str!=0){ a[i]=str%2; str/=2; i++; }for(int k=i-1;k>=0;k--) cout<<a[k]; return 0; }