Initial commit

2022/city/12/grupuri/grupuri.cpp

@@ -0,0 +1,53 @@
+#include <fstream>
+#include <set>
+#include <unordered_set>
+#include <unordered_map>
+using namespace std;
+
+ifstream input_stream;
+ofstream output_stream;
+
+
+// Hashing function?
+string getGroupName(set<int16_t> group) {
+    string res = "";
+    for (auto it = group.begin(); it != group.end(); it++) {
+        res += '0' + *it;
+    }
+    return res;
+}
+
+
+int main() {
+    input_stream.open("grupuri.in");
+    output_stream.open("grupuri.out");
+
+    int N;
+    input_stream >> N;
+
+    unordered_map<string, set<int16_t>> access;
+
+    for (int16_t i = 0; i < N; i++) {
+        int m;
+        input_stream >> m;
+
+        for (int j = 0; j < m; j++) {
+            string code;
+            input_stream >> code;
+
+            access[code].insert(i);
+        }
+    }
+
+    unordered_set<string> groups;
+
+    for (auto it = access.begin(); it != access.end(); it++) {
+        groups.insert(getGroupName(it -> second));
+    }
+
+    output_stream << groups.size() << endl;
+
+    input_stream.close();
+    output_stream.close();
+    return 0;
+}