#include <cstdio>
#include <iostream>
#include <vector>
#include <queue>
#include <utility>
#include <algorithm>
#include <functional>
#include <string>
#include <cstring>
#include <cmath>
#include <map>
#include <set>
#include <bitset>
#include <stack>
#include <iomanip>
#include <fstream>
#define MOD 105011
#define NMAX 30005
#define INF 0x3f3f3f3f
#define pb push_back

using namespace std;

//FILE *fin = freopen("schi.in", "r", stdin);
//FILE *fout = freopen("schi.out", "w", stdout);

typedef pair<int, int> pii;

int main() {
	int i, poz, aux;

	string s;
	cin >> s;

	for (i = 0; i < s.size() - 1; ++i)
		cout << s[i] << '-';
	cout << s[s.size() - 1];

	return 0;
}