diff --git a/du4/program b/du4/program
index 48c13da..5f7e82c 100755
Binary files a/du4/program and b/du4/program differ
diff --git a/du4/program.c b/du4/program.c
index cdffea0..9f232eb 100644
--- a/du4/program.c
+++ b/du4/program.c
@@ -8,7 +8,7 @@ int main ()
 	bool second = false;
 	while(1){
 		c = getchar();
-		if(c <= 255 && c >= 0){
+		if(c == ' ' || c == '+' || c == '\n' || c == '-' || c == '/' || c == '*' || c == '='){
 			if(c == '\n'){
 				break;
 			}else if(c == ' '){
@@ -33,8 +33,6 @@ int main ()
 				continue;
 			}
 		}else{
-			if(i == 2)
-				break;
 			c = 0;
 			int r = scanf("%d",&c);
 			b[i++] = c;
@@ -53,4 +51,4 @@ int main ()
 	else
 		printf("ZLE\n");
 	return 0;
-}
\ No newline at end of file
+}