diff --git a/quito/11.2 b/quito/11.2
new file mode 100755
index 0000000..100de87
Binary files /dev/null and b/quito/11.2 differ
diff --git a/quito/11.2.cpp b/quito/11.2.cpp
new file mode 100644
index 0000000..698bc73
--- /dev/null
+++ b/quito/11.2.cpp
@@ -0,0 +1,33 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int main () {
+    int o, n, m, t, h;
+    cin >> o >> n >> m >> t >> h;
+    int ts, tts, nap, ora;
+
+    vector<vector<bool>> v(m+1, vector<bool>(n+1));
+
+    for (int i = 0; i < o; i++) {
+        cin >> ts >> tts >> nap >> ora;
+        v[tts][ts] = true;
+    }
+
+    int out;
+    int max =0;
+
+    for (int i =0; i < n+1; i++) {
+        int counter = 0;
+        for (int j = 0; j < m+1; j++) {
+            //cout<<v[i][j]<<" ";
+            if (v[i][j]) counter++;
+
+        }
+        if (counter > max) {
+            max = counter;
+            out = i;
+        }
+        //cout<<endl;
+    }
+    cout<<out;
+}
\ No newline at end of file
diff --git a/quito/12.5 b/quito/12.5
new file mode 100755
index 0000000..b29c53f
Binary files /dev/null and b/quito/12.5 differ
diff --git a/quito/12.5.cpp b/quito/12.5.cpp
new file mode 100644
index 0000000..ae68dc6
--- /dev/null
+++ b/quito/12.5.cpp
@@ -0,0 +1,35 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int main() {
+    int n; 
+    cin >> n;
+
+    vector<pair<string, string>>allatok(n);
+    set<string>kaja;
+    set<string> out;
+
+
+    for (int i =0; i < n ;i++) {
+        cin >> allatok[i].first;
+        //cout<<"s";
+        cin >> allatok[i].second;
+        kaja.insert(allatok[i].first);
+    }
+
+    for (int i = 0; i < n;i++) {
+        if (kaja.count(allatok[i].second)) {
+            //cout<<endl<<allatok[i].second<< " is in the set: "<<kaja.count(allatok[i].second);
+            out.insert(allatok[i].first);
+        }
+    }
+
+    cout<<out.size()<<endl;
+    for (string x : out) {
+        cout<<x<<endl;
+    }
+
+
+
+
+}
\ No newline at end of file
diff --git a/quito/12.6 b/quito/12.6
new file mode 100755
index 0000000..ca20b4b
Binary files /dev/null and b/quito/12.6 differ
diff --git a/quito/12.6.cpp b/quito/12.6.cpp
new file mode 100644
index 0000000..afc9c29
--- /dev/null
+++ b/quito/12.6.cpp
@@ -0,0 +1,22 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int main() {
+    int n;
+    cin >> n;
+    vector<string> sorrend(n);
+    set<string> users;
+
+    for (int i = 0; i < n; i++) {
+        cin >> sorrend[i];
+    }
+
+    cout<<endl;
+
+    for (int i = sorrend.size()-1; i >= 0; i--) {
+        if (!users.count(sorrend[i])) {
+            cout<<sorrend[i]<<endl;
+            users.insert(sorrend[i]);
+        }
+    }
+}
\ No newline at end of file
diff --git a/quito/13.1 b/quito/13.1
new file mode 100755
index 0000000..40582f9
Binary files /dev/null and b/quito/13.1 differ
diff --git a/quito/13.1.cpp b/quito/13.1.cpp
new file mode 100644
index 0000000..57a1ad3
--- /dev/null
+++ b/quito/13.1.cpp
@@ -0,0 +1,37 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int main() {
+    int n, m;
+    cin >> n;
+    set<string> store1;
+    set<string> store2;
+    set<string> out;
+    for (int i = 0; i < n; i++) {
+        string temp;
+        cin >> temp;
+        store1.insert(temp);
+    }
+    cin >> m; 
+    for (int i = 0; i < m; i++) {
+        string temp;
+        cin >> temp;
+        store2.insert(temp);
+    }
+
+    for (string x : store1) {
+        if (!store2.count(x)) {
+            out.insert(x);
+        }
+    }
+    for (string x : store2) {
+        if (!store1.count(x)) {
+            out.insert(x);
+        }
+    }
+
+    cout<<out.size()<<endl;
+    for (string x : out) {
+        cout<<x<<endl;
+    }
+}
\ No newline at end of file
diff --git a/quito/13.2 b/quito/13.2
new file mode 100755
index 0000000..512d8f8
Binary files /dev/null and b/quito/13.2 differ
diff --git a/quito/13.2.cpp b/quito/13.2.cpp
new file mode 100644
index 0000000..0e0c539
--- /dev/null
+++ b/quito/13.2.cpp
@@ -0,0 +1,13 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int main() {
+    
+    string input; 
+    cin >> input;
+    for (char i = 'a'; i <= 'z'; i++) {
+
+        cout<<input + i<<' ';
+
+    }
+}
\ No newline at end of file
diff --git a/quito/13.5 b/quito/13.5
new file mode 100755
index 0000000..d30575b
Binary files /dev/null and b/quito/13.5 differ
diff --git a/quito/13.5.cpp b/quito/13.5.cpp
new file mode 100644
index 0000000..2e69a6b
--- /dev/null
+++ b/quito/13.5.cpp
@@ -0,0 +1,36 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int main() {
+    int n, m;
+    cin >> n >> m;
+
+    map<string, int> languages;
+    map<string, int> appearance;
+
+    for (int i = 0; i < n+m; i++) {
+        int cnt;
+        string lang;
+        cin >> cnt;
+        getline(cin, lang);
+        lang = lang.substr(1);
+        languages[lang] = cnt;
+        appearance[lang] += 1;
+    }
+
+    int max = 0, min = 100000;
+    string maxname = "NINCS", minname = "NINCS";
+
+    for (auto p : languages) {
+        if (appearance[p.first] == 2 && p.second > max) {
+            max = p.second;
+            maxname = p.first;
+        }
+        if (appearance[p.first] == 2 && p.second < min) {
+            min = p.second;
+            minname = p.first;
+        }
+    }
+
+    cout<<minname<<endl<<maxname;
+}
\ No newline at end of file
diff --git a/quito/13.6 b/quito/13.6
new file mode 100755
index 0000000..144de37
Binary files /dev/null and b/quito/13.6 differ
diff --git a/quito/13.6.cpp b/quito/13.6.cpp
new file mode 100644
index 0000000..5febee1
--- /dev/null
+++ b/quito/13.6.cpp
@@ -0,0 +1,46 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int main() {
+    int n; 
+    cin >> n;
+
+    set<long>hatvanyok;
+    set<long>hasznalt;
+
+    long a = 2;
+    for (int i =0; i < 30; i++) {
+        hatvanyok.insert(a);
+        a = a * 2;
+        //cout<<a<< " ";
+    }
+
+    //cout<< endl;
+    // for (int x : hatvanyok) {
+    //     cout<<x<<" ";
+    // }
+    //cout<<endl;
+
+    vector<int> szamok(n);
+
+    for (int i = 0; i < n; i++) {
+        cin >> szamok[i];
+
+    }
+
+    int out = 0;
+
+    for (int i = 0; i < n; i++) {
+        for (int j = i+1; j < n; j++) {
+            if (!hasznalt.count(szamok[i] + szamok[j])) {
+                if (hatvanyok.count(szamok[i] + szamok[j])) {
+                    out++;
+                    hasznalt.insert(szamok[i] + szamok[j]);
+                }
+            } else {
+                out++;
+            }
+        }
+    }
+    cout<<out;
+}
\ No newline at end of file