#include <fstream> #include <time.h> #include <iostream> #include <cstdio> #include <algorithm> #include <cstring> #include <cstdlib> #include <vector> #include <bitset> #include <queue> #include <map> #include <set> #include <cmath> #include <iomanip> #define pb push_back #define mp make_pair #define sortv(a) sort(a.begin(), a.end()) #define FOR(i, start, final) for (int i=start; i<=final; ++i) #define ROF(i, start, final) for (int i=start; i>=final; --i) #define f cin #define g cout using namespace std; typedef long long ll; typedef unsigned long long ull; typedef pair < int, int> pi; typedef vector< int > vi; typedef vector< pair< int, int > > vpi; string s; int main() { f.sync_with_stdio(false); f>>s; if (s.size() < 2) { g<<s<<'\n'; return 0; } for (int i = 0; i < (int)s.size() - 1; ++i) { g << s[i] << '-'; } g << s[s.size() - 1] << '\n'; return 0; }