#include <iostream> #include <algorithm> using namespace std; int dos(string arr[],string a){ int x = 0; string tmp = ""; for(int i=0;i<a.length();i++){ if(a[i]==',' || a[i]==' ' || a[i]=='.' || a[i]=='!') {arr[x++] = tmp; tmp = ""; } else tmp += a[i]; } return x; } int main(){ string a,srr[100]; getline(cin,a); int x = dos(srr,a); cout << x << endl; sort(srr,srr+x); for(int i=0;i<x;i++){ cout << srr[i] << endl; } return 0; }