Task 3 - Code - SoftUni CPP Exam

#include <iostream>
#include <string>
#include <sstream>
#include <unordered_map>
#include <vector>
#include <unordered_set>

using namespace std;

int main() {
    std::cin.sync_with_stdio(false); std::cout.sync_with_stdio(false);

    unordered_set<int> separators;

    string separatorLine;
    getline(cin, separatorLine);

    istringstream separatorStream(separatorLine);

    int separator;
    while (separatorStream >> separator) {
        separators.insert(separator);
    }

    string messageLine;
    getline(cin, messageLine);

    istringstream messageStream(messageLine);

    int msgWord;
    unordered_set<int> part;
    unordered_map<int, int> occurences;

    while (messageStream >> msgWord) {
        if (separators.count(msgWord)) {
            part.clear();
        } else {
            if (!part.count(msgWord)) {
                occurences[msgWord]++;
            }
            part.insert(msgWord);
        }
    }
    while (true) {
        int query;
        cin >> query;

        if (query == 0) {
            break;
        }

        cout << occurences[query] << endl;
    }
}