From 2c4c96e838bd29565e7f365b6bceebdd41383e3f Mon Sep 17 00:00:00 2001
From: Marege <dutk.nazar@gmail.com>
Date: Thu, 5 Nov 2026 18:37:31 +0100
Subject: [PATCH] Fix9u8

---
 u8/program.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/u8/program.py b/u8/program.py
index 61deab4..d5b7cbc 100644
--- a/u8/program.py
+++ b/u8/program.py
@@ -8,7 +8,7 @@ def main():
     q = pocet_otazok(tree_lines)
     a = pocet_odpovedi(tree_lines)
     tree = build_tree(tree_lines)
-    if tree is None or len(tree) == 0:
+    if tree is None or len(tree_lines) != 0:
         print("Chybna databaza")
         return
     print("Pocet otazok:", q)
@@ -43,6 +43,8 @@ def build_tree(tree_lines):
     if line.endswith("?"):
         node["a"] = build_tree(tree_lines)
         node["n"] = build_tree(tree_lines)
+        if node["a"] is None or node["n"] is None:
+            return None
     return node
 
 def pocet_otazok(tree_lines):
@@ -66,7 +68,7 @@ def read_tree_lines():
             tree_lines.append(text)
             text = input().rstrip("\r")
     except EOFError:
-        pass
+        return None
     return tree_lines
 
 def controla_batabaz(tree_lines):