diff --git a/du1/program.c b/du1/program.c
index 60a051f..185ba7c 100644
--- a/du1/program.c
+++ b/du1/program.c
@@ -2,32 +2,17 @@
 
 int main(){
 	int c = 0;
-	int a = 0;
-	int counter = 0;
-	char small[] = "abcdefghijklmnopqrstuvwxyz";
-    	char big[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
-	char d;
-	while(c = 1){
+	char a;
+	while(1){
 		c = getchar();
-		d = c;
-		int a = 0;
-		if(d == '\n'){
-			counter++;
+		if(c == EOF)
 			break;
-		}
-		while(a > 26){
-			if(d == small[a]){
-				d = big[a];
-				break;
-			}else if(d == big[a]){
-				d = small[a];
-				break;
-			}
-			a++;		
-		}
-		c = d;
-		putchar (c);
+		if (c >= 'a' && c <= 'z')
+			c = c - 'a' + 'A';
+		else if(c >= 'A' && c <= 'Z') 
+			c = c - 'A' + 'a';
+		a = c;
+		putchar(a);
 	}
-	printf("\nPočet riadkov: %d\n",counter);
 	return 0;
 }