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string s;
list<char> res;
int main() {
  boost;
  tcase {
    cin >> s;
    int n = sz(s);
    res.clear();
    list<char>::iterator it = res.begin();
    rep(i, 0, n - 1) {
      if(s[i] == '<') {
        if(it != res.begin()) {
          it--;
        }
      } else if(s[i] == '>') {
        if(it != res.end()) {
          it++;
        }
      } else if(s[i] == '-') {
        if(it != res.begin()) {
          it--;
          it = res.erase(it);
        }
      } else {
        res.insert(it, s[i]);
      }
    }
    fore(x, res) {
      cout << x;
    }
    cout << endl;
  }
  return 0;
}

prog.cpp:1:1: error: 'string' does not name a type
 string s;
 ^
prog.cpp:2:1: error: 'list' does not name a type
 list<char> res;
 ^
prog.cpp: In function 'int main()':
prog.cpp:4:3: error: 'boost' was not declared in this scope
   boost;
   ^
prog.cpp:5:3: error: 'tcase' was not declared in this scope
   tcase {
   ^

Standard output is empty