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- #include <iostream>
- #include <map>
- #include <set>
- #include <string>
- #include <vector>
- using namespace std;
- string ReadLine() {
- string s;
- getline(cin, s);
- return s;
- }
- int ReadLineWithNumber() {
- int result;
- cin >> result;
- ReadLine();
- return result;
- }
- vector<string> SplitIntoWords(const string& text) {
- vector<string> words;
- string word;
- for (const char c : text) {
- if (c == ' ') {
- words.push_back(word);
- word = "";
- } else {
- word += c;
- }
- }
- words.push_back(word);
- return words;
- }
- set<string> ParseStopWords(const string& text) {
- set<string> stop_words;
- for (const string& word : SplitIntoWords(text)) {
- stop_words.insert(word);
- }
- return stop_words;
- }
- vector<string> SplitIntoWordsNoStop(const string& text, const set<string>& stop_words) {
- vector<string> words;
- for (const string& word : SplitIntoWords(text)) {
- if (stop_words.count(word) == 0) {
- words.push_back(word);
- }
- }
- return words;
- }
- void AddDocument(map<string, set<int>>& word_to_documents,
- const set<string>& stop_words,
- int document_id,
- const string& document) {
- for (const string& word : SplitIntoWordsNoStop(document, stop_words)) {
- word_to_documents[word].insert(document_id);
- }
- }
- // For each document returns its id and relevance
- vector<pair<int, int>> FindDocuments(
- const map<string, set<int>>& word_to_documents,
- const set<string>& stop_words,
- const string& query) {
- const vector<string> query_words = SplitIntoWordsNoStop(query, stop_words);
- map<int, int> document_to_relevance;
- for (const string& word : query_words) {
- if (word_to_documents.count(word) == 0) {
- continue;
- }
- for (const int document_id : word_to_documents.at(word)) {
- ++document_to_relevance[document_id];
- }
- }
- vector<pair<int, int>> found_documents;
- for (auto [document_id, relevance] : document_to_relevance) {
- found_documents.push_back({document_id, relevance});
- }
- return found_documents;
- }
- int main() {
- const string stop_words_joined = ReadLine();
- const set<string> stop_words = ParseStopWords(stop_words_joined);
- // Read documents
- map<string, set<int>> word_to_documents;
- const int document_count = ReadLineWithNumber();
- for (int document_id = 0; document_id < document_count; ++document_id) {
- AddDocument(word_to_documents, stop_words, document_id, ReadLine());
- }
- const string query = ReadLine();
- for (auto [document_id, relevance] : FindDocuments(word_to_documents, stop_words, query)) {
- cout << "{ document_id = "s << document_id << ", relevance = "s << relevance << " }"s << endl;
- }
- }
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