#include <iostream>
#include <string>

using namespace std;

int main() {
    string query , str ="["s;
    getline(cin, query);
    for(int i = 0 ; i <= query.size()-1; i++){
        if (query[i] == ' '){
            str+= "]\n["s;
        }else{
            str+= query[i];
        }
   }
   cout <<str +"]"<<endl;
}