#include<bits/stdc++.h>
using namespace std;
using Int = signed;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}

//INSERT ABOVE HERE
signed main(){
  Int n;
  cin>>n;
  Int a=n/1000000;
  Int b=(n%1000000)/1000;
  Int c=n%1000;
  if(n==1000000000){
    cout<<"1,000,000,000"<<endl;
    return 0;
  }
  if(a){
    printf("%d,%03d,%03d\n",a,b,c);
    return 0;
  };
  if(b){
    printf("%d,%03d\n",b,c);
    return 0;
  };
  cout<<c<<endl;
  return 0;
}