#include <iostream>
#include <string.h>

using namespace std;

char s[10000000000];

int main()
{
    cin.get(s, 10000000001);
    int l = strlen(s);

    for (int i = 0; i < l-1; i++)
    {
        cout << s[i] << "-";
    }
    cout << s[l-1];

    return 0;
}