vector<string> result;

stringstream ss(s);

string buf;

while(getline(ss, buf, delim)) {

result.push_back(buf);

}

return result;

int start = stoi(startTime.substr(0, 2)) * 60 + stoi(startTime.substr(3, 2));

int end = stoi(endTime.substr(0, 2)) * 60 + stoi(endTime.substr(3, 2));

return end - start;

map<string, int> total;

unordered_map<string, string> enterTimes;

unordered_map<string, bool> enters;

vector<int> answer;

int baseTime = fees[0];

int baseFee = fees[1];

int perTime = fees[2];

int perFee = fees[3];

for (string record: records) {

vector<string> vRecord = split(record, ' ');

if (vRecord[2] == "OUT") {

total[vRecord[1]] += calcGapTimes(enterTimes[vRecord[1]], vRecord[0]);

enters[vRecord[1]] = false;

continue;

}

enterTimes[vRecord[1]] = vRecord[0];

enters[vRecord[1]] = true;

}

for (pair<string, bool> entry: enters) {

if (entry.second) {

total[entry.first] += calcGapTimes(enterTimes[entry.first], "23:59");

}

}

for (pair<string, int> entry: total) {

if (entry.second < baseTime) {

answer.push_back(baseFee);

continue;

}

answer.push_back(baseFee + (ceil((double) (entry.second - baseTime) / perTime) * perFee));

}

return answer;

}