diff --git a/du1/program.c b/du1/program.c
index 1375958..991842e 100644
--- a/du1/program.c
+++ b/du1/program.c
@@ -1,57 +1,37 @@
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <stdbool.h>
-
-int GetTypZnaku(int vstup);
-
-int main()
-{
-    int vstup = 0;
-    int pocetRiadkov = 0;
-    while (1)
-    {
-        //helper lok. premeny
-        bool mozeBytPrinted = true;
-        int vysChar = 0;
-
-        //scanning faza programu
-        vstup = getchar();
-        vysChar = vstup;
-
-        if (vstup == EOF) { break;} //ak EOF (End Of File), resp. koniec suboru
-
-        if (vstup == '\n')  // ak NewLine char, resp. koniec riadku
-        { 
-            pocetRiadkov += 1;
-        }
-        //ak vstup == malemu pismenu
-        else if (GetTypZnaku(vstup) == 0)
-        {
-            vysChar = toupper(vstup);
-        }
-        //ak vstup == velke pismeno
-        else if (GetTypZnaku(vstup) == 1)
-        {
-            vysChar = tolower(vstup);
-        }
-        //ak to nie je neviditelny char (resp. riadiaci/control) a NIE je NewLine
-        else if (GetTypZnaku(vstup) == 2 && vstup != '\n')
-        {
-            mozeBytPrinted = false;
-        }
-
-        //output vidtelnehok charakteru
-        if (mozeBytPrinted) { putchar(vysChar);}
-    }
-    printf("%d\n", pocetRiadkov);
-    return 0;
-}
-int GetTypZnaku(int vstup)
-{
-    if (islower(vstup) != 0) {  return 0;}
-    if (isupper(vstup) != 0) {  return 1;}
-    if (iscntrl(vstup) != 0) {  return 2;}
-    return -1;
-}
\ No newline at end of file
+#include <stdio.h>
+#include <ctype.h>
+
+int main()
+{
+    int pocetRiadkov = 0;
+    while (1)
+    {
+        int vstup = getchar();
+        if (vstup == EOF) {break;}
+        
+        if (vstup == '\n')
+        {
+            pocetRiadkov += 1;
+            putchar(vstup);
+        }
+        else if (vstup == '\r')
+        {
+            continue;
+        }
+        else if (islower(vstup) != 0) 
+        {
+            putchar(toupper(vstup));
+        }
+        else if (isupper(vstup) != 0)
+        {
+            putchar(tolower(vstup));
+        }
+        else if (vstup >= 32 && vstup <= 126)
+        {
+            putchar(vstup);
+        }
+
+    }
+    printf("\nLines_count: %d\n", pocetRiadkov);
+    return 0;
+}