#include<iostream>
using namespace std;
char s[20000];
int main()
{
    cin.getline(s,20000);
    for(int i=0;s[i]!=0;i++)
    if(s[i]>='0'&&s[i]<='9' && s[i+1]!=0) cout<<s[i]<<"-";
    else cout<<s[i];
}