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