diff --git a/du2/program.c b/du2/program.c
index aec4518..613ad12 100644
--- a/du2/program.c
+++ b/du2/program.c
@@ -10,9 +10,9 @@ int main(){
 	while(1){
 		int value = 0;
 		int r = scanf("%d",&value);
+		if(r == EOF || r < 0)
+			continue;
 		if (r == 1){
-			if(r == EOF)
-				continue;
 			results[i] = value;
 			if(max < results[i]){
 				max = results[i];