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

int main()
{
	std::stringstream out;
	char c;
	while ( c != '\n' )
	{
		c = getchar();
		if ( c != '\n' )
			out << c << '-';
		else
			break;
	}

	out.seekp(-1, out.cur); out << '\n';
	std::cout << out.str();

	return 0;
}