diff --git a/du4/program.c b/du4/program.c
index 6cf3803..34acd39 100644
--- a/du4/program.c
+++ b/du4/program.c
@@ -33,6 +33,7 @@ int compare(const void *a, const void *b) {
 int main() {
     Student students[maxstudents];
     int count = 0;
+    int valid_data_found = 0;
     char buffer[200];
 
     while (fgets(buffer, sizeof(buffer), stdin)) {
@@ -46,9 +47,11 @@ int main() {
         char name[namemax];
 
         if (sscanf(buffer, "%d %99[^\n]", &golosa, name) != 2 || golosa <= 0) {
-            break;;
+            break;
         }
 
+        valid_data_found = 1;
+
         int index = find_student(students, count, name);
 
         if (index != -1) {
@@ -60,6 +63,11 @@ int main() {
         }
     }
 
+    if (!valid_data_found) {
+        printf("Nepodarilo nacitat nic\n");
+        return 0;
+    }
+
     if (count == 0) {
         printf("Chyba: Nepodarilo sa nacitat ziadny zaznam.\n");
         return 0;
@@ -74,9 +82,4 @@ int main() {
     }
 
     return 0;
-}
-
-
-
-
-
+}
\ No newline at end of file
diff --git a/du4/program.exe b/du4/program.exe
index 6711e83..99b451a 100644
Binary files a/du4/program.exe and b/du4/program.exe differ