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