diff --git a/cv7/program.c b/cv7/program.c
index e69de29..965c8bf 100644
--- a/cv7/program.c
+++ b/cv7/program.c
@@ -0,0 +1,77 @@
+class Node:
+    def __init__(self, text, is_answer=False):
+        self.text = text
+        self.is_answer = is_answer
+        self.yes_branch = None
+        self.no_branch = None
+
+class KnowledgeSystem:
+    def __init__(self):
+        self.root = None
+        self.num_answers = 0
+
+    def load_rules(self, lines):
+        # Initialize index for lines
+        index = 0
+
+        # Recursive function to parse lines into a binary tree
+        def parse_node():
+            nonlocal index
+            if index >= len(lines):
+                raise ValueError("Chyba: Neočakávaný koniec pravidiel.")
+            line = lines[index].strip()
+            index += 1
+
+            if not line:
+                return None
+
+            is_answer = line.startswith("*")
+            text = line[1:].strip() if is_answer else line
+
+            node = Node(text, is_answer)
+            if is_answer:
+                self.num_answers += 1
+                return node
+            node.yes_branch = parse_node()  # Process yes branch
+            node.no_branch = parse_node()   # Process no branch
+            return node
+
+        # Parse the tree from the first line
+        self.root = parse_node()
+
+    def ask_questions(self):
+        current = self.root
+        while current:
+            print(current.text)
+            if current.is_answer:
+                print("Koniec.")
+                break
+            answer = input("Odpovedajte 'a' pre prvú možnosť alebo 'n' pre druhú možnosť: ").strip().lower()
+            if answer == 'a':
+                current = current.yes_branch
+            elif answer == 'n':
+                current = current.no_branch
+            else:
+                print("Neplatná odpoveď, koniec.")
+                break
+
+def main():
+    lines = []
+    print("Zadajte bázu pravidiel (prázdny riadok pre koniec):")
+    while True:
+        line = input()
+        if not line.strip():
+            break
+        lines.append(line)
+
+    # Initialize knowledge system and load rules
+    ks = KnowledgeSystem()
+    try:
+        ks.load_rules(lines)
+        print(f"Pozná {ks.num_answers} druhov ovocia a zeleniny.")
+        ks.ask_questions()
+    except ValueError as e:
+        print(e)
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file