#include <iostream>
#include <cstring>

using namespace std;

char x[1000000005];

int main()
{
    cin.get( x , 1000000005 );
    for( int i = 0 ; i < strlen(x) - 1 ; ++i )
        cout<< x[i] << '-';
    cout << x[ strlen(x) - 1 ];

    return 0;
}