# include <iostream> # include <cstring> # include <algorithm> using namespace std ; string a [1145] ; int main ( ) { string s ; getline ( cin , s ) ; int cnt = 0 ; for ( int i = 0 ; i < s . size ( ) ; i ++ ) { if ( s [i] == ' ' || s [i] == ',' || s [i] == '!' || s [i] == '.' ) { cnt ++ ; } else { a [cnt] += s [i] ; } } sort ( a + 0 , a + cnt ) ; cout << cnt << endl ; ; for ( int i = 0 ; i < cnt ; i ++ ) { cout << a [i] << endl ; } return 0 ; }