#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int x,i=0,a[10000]; cin>>x; while(x!=0){ a[i]=x%2; x=(x-x%2)/2; i++; } for(int c=i-1;c>=0;c--){ cout<<a[c]; } return 0; }