diff --git a/du3/program.c b/du3/program.c
index 2f88c1c..6b0f4e0 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -11,7 +11,9 @@ int main(){
     for(int idx=0;1;idx++ ){
         ch=getchar();
         if(ch==EOF||ch==' ')break;
-        pol[idx]=ch;
+        if((ch<'9'&&ch>'0')||(ch==EOF)||(ch==' '));
+	else printf("Nepodarilo sa nacitat polynom na 2 mieste.\n");
+	pol[idx]=ch;
     }
 
     int koef=-1;