int main() {
# ifdef _DEBUG
freopen("i.in", "r", stdin);
# else
freopen("i.in", "r", stdin);
freopen("i.out", "w", stdout);
# endif
ios_base::sync_with_stdio(false);
cin.tie(NULL);
words.reserve(20000);
int i;
string s;
while (cin >> s) {
if (s == "<text>") {
q.push((lastMap = new Memory));
if (q.size() > 7) {
Memory* toDel = q.front();
for (i = 0; i < (int)words.size(); i++)
sevenDaysMap.words[i].count -= toDel->words[i].count;
q.pop();
}
while (cin >> s, s != "</text>") {
if (s.length() < 4)
continue;
map<string, int>::iterator lb = wordMap.lower_bound(s);
int id;
if (lb != wordMap.end() && !wordMap.key_comp()(s, lb->first)) {
//existing.
id = lb->second;
} else {
//new.
id = words.size();
wordMap.insert(lb, make_pair(s, id));
words.push_back(s);
}
lastMap->words[id].count++;
sevenDaysMap.words[id].count++;
}
} else if (s == "<top") {
C get_comparator() {
return weak_refs.key_comp();
}
