diff --git a/a1/program.c b/a1/program.c
new file mode 100644
index 0000000..503e20d
--- /dev/null
+++ b/a1/program.c
@@ -0,0 +1,5 @@
+#include <stdio.h>
+
+int main(){
+	return 0;
+}
diff --git a/du4/program b/du4/program
index f2a08ae..b650674 100755
Binary files a/du4/program and b/du4/program differ
diff --git a/du4/program.c b/du4/program.c
index ea1a107..d40a9f5 100644
--- a/du4/program.c
+++ b/du4/program.c
@@ -2,13 +2,12 @@
 
 int main(){
 	int c[999];
-	int a, i = 0;
+	int i = 0;
 	int vysledok;
 	char riadok[999];
 	char *endptr = NULL;
 	char need;
 	while(1){
-		a++;
 		char* r = fgets(riadok,999,stdin);
 		if(*r == '\n'){
 			break;