#include <iostream>
#include <fstream>
#include <vector>
#include <algorithm>
#include <string.h>
using namespace std;

ifstream f("date.in");
ofstream g("date.out");


int main()
{   long long n;
    int i;
    vector<int> v;
    cin >> n;
    while(n)
        {v.push_back(n%10);
        n/=10;
        }
    for(i=v.size()-1;i>0;--i)
        cout << v[i] << "-";
    cout << v[0] << '\n';
    return 0;
}