#include <bits/stdc++.h>   using namespace std;   vector<string> ans;   int main() {     char c;     string ss =   ;     while ((c = getchar()) !=   n ) {       if ( a  <= c &&  z  >= c) {         ss += c;         continue;       } else if (c ==    ) {         if (!ss.empty()) {           ans.push_back(ss);           ss =   ;         }       } else {         if (!ss.empty()) {           ans.push_back(ss);           ss =   ;         }         ans[ans.size() - 1] += c;       }     }     if (!ss.empty()) ans.push_back(ss);     for (int i = 0; i < ans.size(); i++) {       cout << ans[i];       if (i == ans.size() - 1)         cout <<   n ;       else         cout <<    ;     }     return 0;   }   